57691257 has 8 divisors (see below), whose sum is σ = 82838784. Its totient is φ = 35502288.

The previous prime is 57691247. The next prime is 57691259. The reversal of 57691257 is 75219675.

57691257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57691257 - 2⁷ = 57691129 is a prime.

It is a super-2 number, since 2×57691257² = 6656562268480098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57691259) 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, 739593 + ... + 739670.

It is an arithmetic number, because the mean of its divisors is an integer number (10354848).

Almost surely, 2^57691257 is an apocalyptic number.

It is an amenable number.

57691257 is a deficient number, since it is larger than the sum of its proper divisors (25147527).

57691257 is a wasteful number, since it uses less digits than its factorization.

57691257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479279.

The product of its digits is 132300, while the sum is 42.

The square root of 57691257 is about 7595.4760877775. The cubic root of 57691257 is about 386.3995991556.

The spelling of 57691257 in words is "fifty-seven million, six hundred ninety-one thousand, two hundred fifty-seven".