53559972 has 18 divisors (see below), whose sum is σ = 135387798. Its totient is φ = 17853312.

The previous prime is 53559967. The next prime is 53559973. The reversal of 53559972 is 27995535.

53559972 is a `hidden beast` number, since 5 + 3 + 559 + 97 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 1806336 = 7194^2 + 1344^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (53559973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743853 + ... + 743924.

Almost surely, 2^53559972 is an apocalyptic number.

It is an amenable number.

53559972 is an abundant number, since it is smaller than the sum of its proper divisors (81827826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53559972 is a wasteful number, since it uses less digits than its factorization.

53559972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487787 (or 1487782 counting only the distinct ones).

The product of its digits is 425250, while the sum is 45.

The square root of 53559972 is about 7318.4678724443. The cubic root of 53559972 is about 376.9468459514.

The spelling of 53559972 in words is "fifty-three million, five hundred fifty-nine thousand, nine hundred seventy-two".