57077444 has 24 divisors (see below), whose sum is σ = 109717440. Its totient is φ = 25860384.

The previous prime is 57077443. The next prime is 57077473. The reversal of 57077444 is 44477075.

It is a super-2 number, since 2×57077444² = 6515669227146272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 57077398 and 57077407.

It is not an unprimeable number, because it can be changed into a prime (57077443) 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, 14579 + ... + 18074.

It is an arithmetic number, because the mean of its divisors is an integer number (4571560).

Almost surely, 2^57077444 is an apocalyptic number.

It is an amenable number.

57077444 is a deficient number, since it is larger than the sum of its proper divisors (52639996).

57077444 is a wasteful number, since it uses less digits than its factorization.

57077444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32699 (or 32697 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 57077444 is about 7554.9615485454. The cubic root of 57077444 is about 385.0243285914.

The spelling of 57077444 in words is "fifty-seven million, seventy-seven thousand, four hundred forty-four".