57020444 has 24 divisors (see below), whose sum is σ = 113119440. Its totient is φ = 24931584.

The previous prime is 57020413. The next prime is 57020449. The reversal of 57020444 is 44402075.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57020449) 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, 27869 + ... + 29844.

It is an arithmetic number, because the mean of its divisors is an integer number (4713310).

Almost surely, 2^57020444 is an apocalyptic number.

It is an amenable number.

57020444 is a deficient number, since it is larger than the sum of its proper divisors (56098996).

57020444 is a wasteful number, since it uses less digits than its factorization.

57020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57749 (or 57747 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 57020444 is about 7551.1882508649. The cubic root of 57020444 is about 384.8961185970.

The spelling of 57020444 in words is "fifty-seven million, twenty thousand, four hundred forty-four".