57161929 has 24 divisors (see below), whose sum is σ = 66725568. Its totient is φ = 48525120.

The previous prime is 57161911. The next prime is 57161933. The reversal of 57161929 is 92916175.

It is not a de Polignac number, because 57161929 - 2¹³ = 57153737 is a prime.

It is a super-2 number, since 2×57161929² = 6534972254002082, 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 = 57161891 and 57161900.

It is not an unprimeable number, because it can be changed into a prime (57161959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342204 + ... + 342370.

It is an arithmetic number, because the mean of its divisors is an integer number (2780232).

It is a vampire number, since it can be written as 6179 ⋅ 9251 (with its own digits).

Almost surely, 2^57161929 is an apocalyptic number.

It is an amenable number.

57161929 is a deficient number, since it is larger than the sum of its proper divisors (9563639).

57161929 is a wasteful number, since it uses less digits than its factorization.

57161929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 244 counting only the distinct ones).

The product of its digits is 34020, while the sum is 40.

The square root of 57161929 is about 7560.5508397206. The cubic root of 57161929 is about 385.2142036208.

It can be divided in two parts, 571 and 61929, that added together give a square (62500 = 250²).

The spelling of 57161929 in words is "fifty-seven million, one hundred sixty-one thousand, nine hundred twenty-nine".