53387472 has 20 divisors (see below), whose sum is σ = 137917760. Its totient is φ = 17795808.

The previous prime is 53387461. The next prime is 53387479. The reversal of 53387472 is 27478335.

It is a self number, because there is not a number n which added to its sum of digits gives 53387472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53387479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556072 + ... + 556167.

It is an arithmetic number, because the mean of its divisors is an integer number (6895888).

Almost surely, 2^53387472 is an apocalyptic number.

It is an amenable number.

53387472 is an abundant number, since it is smaller than the sum of its proper divisors (84530288).

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

53387472 is a wasteful number, since it uses less digits than its factorization.

53387472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112250 (or 1112244 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 53387472 is about 7306.6731143524. The cubic root of 53387472 is about 376.5417345700.

The spelling of 53387472 in words is "fifty-three million, three hundred eighty-seven thousand, four hundred seventy-two".