57421544 has 8 divisors (see below), whose sum is σ = 107665410. Its totient is φ = 28710768.

The previous prime is 57421543. The next prime is 57421577. The reversal of 57421544 is 44512475.

It can be written as a sum of positive squares in only one way, i.e., 54316900 + 3104644 = 7370^2 + 1762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 57421544.

It is not an unprimeable number, because it can be changed into a prime (57421541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3588839 + ... + 3588854.

Almost surely, 2^57421544 is an apocalyptic number.

It is an amenable number.

57421544 is a deficient number, since it is larger than the sum of its proper divisors (50243866).

57421544 is a wasteful number, since it uses less digits than its factorization.

57421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177699 (or 7177695 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 57421544 is about 7577.7004427465. The cubic root of 57421544 is about 385.7965047278.

The spelling of 57421544 in words is "fifty-seven million, four hundred twenty-one thousand, five hundred forty-four".