54487564 has 24 divisors (see below), whose sum is σ = 97070400. Its totient is φ = 26757120.

The previous prime is 54487547. The next prime is 54487571. The reversal of 54487564 is 46578445.

It is a self number, because there is not a number n which added to its sum of digits gives 54487564.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84684 + ... + 85324.

It is an arithmetic number, because the mean of its divisors is an integer number (4044600).

Almost surely, 2^54487564 is an apocalyptic number.

It is an amenable number.

54487564 is a deficient number, since it is larger than the sum of its proper divisors (42582836).

54487564 is a wasteful number, since it uses less digits than its factorization.

54487564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 991 counting only the distinct ones).

The product of its digits is 537600, while the sum is 43.

The square root of 54487564 is about 7381.5692098632. The cubic root of 54487564 is about 379.1104863723.

The spelling of 54487564 in words is "fifty-four million, four hundred eighty-seven thousand, five hundred sixty-four".