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157144057 = 727078293
BaseRepresentation
bin10010101110111…
…01001111111001
3101221200202010021
421113131033321
5310212102212
623332050441
73615462640
oct1127351771
9357622107
10157144057
1180781724
1244763a21
1326730865
1416c28357
15dbe1307
hex95dd3f9

157144057 has 8 divisors (see below), whose sum is σ = 179681216. Its totient is φ = 134628912.

The previous prime is 157144049. The next prime is 157144067. The reversal of 157144057 is 750441751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157144057 - 23 = 157144049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157144037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14803 + ... + 23095.

It is an arithmetic number, because the mean of its divisors is an integer number (22460152).

Almost surely, 2157144057 is an apocalyptic number.

It is an amenable number.

157144057 is a deficient number, since it is larger than the sum of its proper divisors (22537159).

157144057 is an equidigital number, since it uses as much as digits as its factorization.

157144057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 157144057 is about 12535.7112682129. The cubic root of 157144057 is about 539.6340192766.

The spelling of 157144057 in words is "one hundred fifty-seven million, one hundred forty-four thousand, fifty-seven".

Divisors: 1 7 2707 8293 18949 58051 22449151 157144057