57697081 has 4 divisors (see below), whose sum is σ = 62135332. Its totient is φ = 53258832.

The previous prime is 57697067. The next prime is 57697111. The reversal of 57697081 is 18079675.

57697081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12538681 + 45158400 = 3541^2 + 6720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57697081 is a prime.

It is a super-2 number, since 2×57697081² = 6657906311841122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57697001) 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 3 ways as a sum of consecutive naturals, for example, 2219106 + ... + 2219131.

It is an arithmetic number, because the mean of its divisors is an integer number (15533833).

Almost surely, 2^57697081 is an apocalyptic number.

It is an amenable number.

57697081 is a deficient number, since it is larger than the sum of its proper divisors (4438251).

57697081 is a wasteful number, since it uses less digits than its factorization.

57697081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438250.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 57697081 is about 7595.8594642081. The cubic root of 57697081 is about 386.4126012155.

The spelling of 57697081 in words is "fifty-seven million, six hundred ninety-seven thousand, eighty-one".