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57197153 = 1337118913
BaseRepresentation
bin1101101000110…
…0001001100001
310222121220202002
43122030021201
5104120302103
65401533345
71263111356
oct332141141
9128556662
1057197153
112a317082
12171a4255
13bb08290
14784c62d
15504c488
hex368c261

57197153 has 8 divisors (see below), whose sum is σ = 63262248. Its totient is φ = 51369984.

The previous prime is 57197143. The next prime is 57197207. The reversal of 57197153 is 35179175.

It can be written as a sum of positive squares in 4 ways, for example, as 1067089 + 56130064 = 1033^2 + 7492^2 .

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 57197153 - 212 = 57193057 is a prime.

It is a super-2 number, since 2×571971532 = 6543028622610818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57197143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58976 + ... + 59937.

It is an arithmetic number, because the mean of its divisors is an integer number (7907781).

Almost surely, 257197153 is an apocalyptic number.

It is an amenable number.

57197153 is a deficient number, since it is larger than the sum of its proper divisors (6065095).

57197153 is a wasteful number, since it uses less digits than its factorization.

57197153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118963.

The product of its digits is 33075, while the sum is 38.

The square root of 57197153 is about 7562.8799408691. The cubic root of 57197153 is about 385.2933122117.

The spelling of 57197153 in words is "fifty-seven million, one hundred ninety-seven thousand, one hundred fifty-three".

Divisors: 1 13 37 481 118913 1545869 4399781 57197153