57521667 has 8 divisors (see below), whose sum is σ = 87652096. Its totient is φ = 32869512.

The previous prime is 57521617. The next prime is 57521671. The reversal of 57521667 is 76612575.

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

It is not a de Polignac number, because 57521667 - 2⁸ = 57521411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57521617) 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, 1369543 + ... + 1369584.

It is an arithmetic number, because the mean of its divisors is an integer number (10956512).

Almost surely, 2^57521667 is an apocalyptic number.

57521667 is a deficient number, since it is larger than the sum of its proper divisors (30130429).

57521667 is a wasteful number, since it uses less digits than its factorization.

57521667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739137.

The product of its digits is 88200, while the sum is 39.

The square root of 57521667 is about 7584.3039891608. The cubic root of 57521667 is about 386.0206057172.

The spelling of 57521667 in words is "fifty-seven million, five hundred twenty-one thousand, six hundred sixty-seven".