57165955 has 16 divisors (see below), whose sum is σ = 85526784. Its totient is φ = 35635680.

The previous prime is 57165949. The next prime is 57165973. The reversal of 57165955 is 55956175.

It is not a de Polignac number, because 57165955 - 2⁹ = 57165443 is a prime.

It is a super-2 number, since 2×57165955² = 6535892822124050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73857 + ... + 74626.

It is an arithmetic number, because the mean of its divisors is an integer number (5345424).

Almost surely, 2^57165955 is an apocalyptic number.

57165955 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

57165955 is a deficient number, since it is larger than the sum of its proper divisors (28360829).

57165955 is a wasteful number, since it uses less digits than its factorization.

57165955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148506.

The product of its digits is 236250, while the sum is 43.

The square root of 57165955 is about 7560.8170854743. The cubic root of 57165955 is about 385.2232471457.

The spelling of 57165955 in words is "fifty-seven million, one hundred sixty-five thousand, nine hundred fifty-five".