57161145 has 8 divisors (see below), whose sum is σ = 91457856. Its totient is φ = 30485936.

The previous prime is 57161119. The next prime is 57161149. The reversal of 57161145 is 54116175.

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 57161145 - 2⁵ = 57161113 is a prime.

It is a super-2 number, since 2×57161145² = 6534792995422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57161149) 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, 1905357 + ... + 1905386.

It is an arithmetic number, because the mean of its divisors is an integer number (11432232).

Almost surely, 2^57161145 is an apocalyptic number.

It is an amenable number.

57161145 is a deficient number, since it is larger than the sum of its proper divisors (34296711).

57161145 is a wasteful number, since it uses less digits than its factorization.

57161145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810751.

The product of its digits is 4200, while the sum is 30.

The square root of 57161145 is about 7560.4989914688. The cubic root of 57161145 is about 385.2124424876.

It can be divided in two parts, 571 and 61145, that added together give a palindrome (61716).

The spelling of 57161145 in words is "fifty-seven million, one hundred sixty-one thousand, one hundred forty-five".