57018661 has 8 divisors (see below), whose sum is σ = 66551040. Its totient is φ = 47833008.

The previous prime is 57018653. The next prime is 57018683. The reversal of 57018661 is 16681075.

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 57018661 - 2³ = 57018653 is a prime.

It is a super-2 number, since 2×57018661² = 6502255404465842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57018631) 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, 86326 + ... + 86983.

It is an arithmetic number, because the mean of its divisors is an integer number (8318880).

Almost surely, 2^57018661 is an apocalyptic number.

It is an amenable number.

57018661 is a deficient number, since it is larger than the sum of its proper divisors (9532379).

57018661 is a wasteful number, since it uses less digits than its factorization.

57018661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173363.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 57018661 is about 7551.0701890527. The cubic root of 57018661 is about 384.8921067205.

The spelling of 57018661 in words is "fifty-seven million, eighteen thousand, six hundred sixty-one".