53516564 has 12 divisors (see below), whose sum is σ = 93782388. Its totient is φ = 26721600.

The previous prime is 53516557. The next prime is 53516579. The reversal of 53516564 is 46561535.

It can be written as a sum of positive squares in 2 ways, for example, as 4376464 + 49140100 = 2092^2 + 7010^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5747 + ... + 11834.

It is an arithmetic number, because the mean of its divisors is an integer number (7815199).

Almost surely, 2^53516564 is an apocalyptic number.

It is an amenable number.

53516564 is a deficient number, since it is larger than the sum of its proper divisors (40265824).

53516564 is a wasteful number, since it uses less digits than its factorization.

53516564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18346 (or 18344 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 53516564 is about 7315.5016232655. The cubic root of 53516564 is about 376.8449854859.

The spelling of 53516564 in words is "fifty-three million, five hundred sixteen thousand, five hundred sixty-four".