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957157057 = 2153444569
BaseRepresentation
bin111001000011010…
…000111011000001
32110201001121122101
4321003100323001
53430013011212
6234551110401
732501462233
oct7103207301
92421047571
10957157057
1145132129a
12228672401
131233b962c
1491198253
155906c157
hex390d0ec1

957157057 has 4 divisors (see below), whose sum is σ = 957603780. Its totient is φ = 956710336.

The previous prime is 957157049. The next prime is 957157063. The reversal of 957157057 is 750751759.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750751759 = 7191044161.

It can be written as a sum of positive squares in 2 ways, for example, as 340181136 + 616975921 = 18444^2 + 24839^2 .

It is a cyclic number.

It is not a de Polignac number, because 957157057 - 23 = 957157049 is a prime.

It is a super-2 number, since 2×9571570572 = 1832299263529802498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 957156998 and 957157016.

It is not an unprimeable number, because it can be changed into a prime (957157007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220132 + ... + 224437.

It is an arithmetic number, because the mean of its divisors is an integer number (239400945).

Almost surely, 2957157057 is an apocalyptic number.

It is an amenable number.

957157057 is a deficient number, since it is larger than the sum of its proper divisors (446723).

957157057 is a wasteful number, since it uses less digits than its factorization.

957157057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446722.

The product of its (nonzero) digits is 385875, while the sum is 46.

The square root of 957157057 is about 30937.9549582709. The cubic root of 957157057 is about 985.5100751699.

The spelling of 957157057 in words is "nine hundred fifty-seven million, one hundred fifty-seven thousand, fifty-seven".

Divisors: 1 2153 444569 957157057