53545624 has 32 divisors (see below), whose sum is σ = 110859840. Its totient is φ = 24042400.

The previous prime is 53545619. The next prime is 53545669. The reversal of 53545624 is 42654535.

It is a self number, because there is not a number n which added to its sum of digits gives 53545624.

It is a congruent number.

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, 3639 + ... + 10969.

It is an arithmetic number, because the mean of its divisors is an integer number (3464370).

Almost surely, 2^53545624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53545624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55429920).

53545624 is an abundant number, since it is smaller than the sum of its proper divisors (57314216).

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

53545624 is a wasteful number, since it uses less digits than its factorization.

53545624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7431 (or 7427 counting only the distinct ones).

The product of its digits is 72000, while the sum is 34.

The square root of 53545624 is about 7317.4875469658. The cubic root of 53545624 is about 376.9131832728.

The spelling of 53545624 in words is "fifty-three million, five hundred forty-five thousand, six hundred twenty-four".