57001861 has 8 divisors (see below), whose sum is σ = 65455424. Its totient is φ = 48625920.

The previous prime is 57001859. The next prime is 57001873. The reversal of 57001861 is 16810075.

It is a happy number.

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

It is not a de Polignac number, because 57001861 - 2¹ = 57001859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57001801) 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, 17820 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (8181928).

Almost surely, 2^57001861 is an apocalyptic number.

It is an amenable number.

57001861 is a deficient number, since it is larger than the sum of its proper divisors (8453563).

57001861 is a wasteful number, since it uses less digits than its factorization.

57001861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38811.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 57001861 is about 7549.9576820006. The cubic root of 57001861 is about 384.8543014216.

The spelling of 57001861 in words is "fifty-seven million, one thousand, eight hundred sixty-one".