57690281 has 8 divisors (see below), whose sum is σ = 63072000. Its totient is φ = 52331440.

The previous prime is 57690277. The next prime is 57690301. The reversal of 57690281 is 18209675.

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 57690281 - 2² = 57690277 is a prime.

It is a super-2 number, since 2×57690281² = 6656337043717922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57690271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (7884000).

Almost surely, 2^57690281 is an apocalyptic number.

It is an amenable number.

57690281 is a deficient number, since it is larger than the sum of its proper divisors (5381719).

57690281 is a wasteful number, since it uses less digits than its factorization.

57690281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 57690281 is about 7595.4118387353. The cubic root of 57690281 is about 386.3974201533.

The spelling of 57690281 in words is "fifty-seven million, six hundred ninety thousand, two hundred eighty-one".