57161972 has 24 divisors (see below), whose sum is σ = 114965760. Its totient is φ = 24360480.

The previous prime is 57161963. The next prime is 57161977. The reversal of 57161972 is 27916175.

57161972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57161977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (4790240).

Almost surely, 2^57161972 is an apocalyptic number.

It is an amenable number.

57161972 is an abundant number, since it is smaller than the sum of its proper divisors (57803788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57161972 is a wasteful number, since it uses less digits than its factorization.

57161972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471 (or 11469 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 57161972 is about 7560.5536834282. The cubic root of 57161972 is about 385.2143002131.

The spelling of 57161972 in words is "fifty-seven million, one hundred sixty-one thousand, nine hundred seventy-two".