57535721 has 8 divisors (see below), whose sum is σ = 59625984. Its totient is φ = 55460160.

The previous prime is 57535711. The next prime is 57535727. The reversal of 57535721 is 12753575.

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

It is a cyclic number.

It is not a de Polignac number, because 57535721 - 2⁶ = 57535657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57535727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4625 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (7453248).

Almost surely, 2^57535721 is an apocalyptic number.

It is an amenable number.

57535721 is a deficient number, since it is larger than the sum of its proper divisors (2090263).

57535721 is a wasteful number, since it uses less digits than its factorization.

57535721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351.

The product of its digits is 36750, while the sum is 35.

The square root of 57535721 is about 7585.2304513442. The cubic root of 57535721 is about 386.0520413605.

The spelling of 57535721 in words is "fifty-seven million, five hundred thirty-five thousand, seven hundred twenty-one".