53621544 has 32 divisors (see below), whose sum is σ = 134547840. Its totient is φ = 17808000.

The previous prime is 53621539. The next prime is 53621549. The reversal of 53621544 is 44512635.

It is an interprime number because it is at equal distance from previous prime (53621539) and next prime (53621549).

It is not an unprimeable number, because it can be changed into a prime (53621549) 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 7 ways as a sum of consecutive naturals, for example, 2769 + ... + 10719.

It is an arithmetic number, because the mean of its divisors is an integer number (4204620).

Almost surely, 2^53621544 is an apocalyptic number.

It is an amenable number.

53621544 is an abundant number, since it is smaller than the sum of its proper divisors (80926296).

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

53621544 is a wasteful number, since it uses less digits than its factorization.

53621544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241 (or 8237 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 53621544 is about 7322.6732823471. The cubic root of 53621544 is about 377.0912353916.

The spelling of 53621544 in words is "fifty-three million, six hundred twenty-one thousand, five hundred forty-four".