53408844 has 36 divisors (see below), whose sum is σ = 136861816. Its totient is φ = 17558208.

The previous prime is 53408843. The next prime is 53408857. The reversal of 53408844 is 44880435.

53408844 is a `hidden beast` number, since 534 + 0 + 88 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53408799 and 53408808.

It is not an unprimeable number, because it can be changed into a prime (53408843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7534 + ... + 12789.

Almost surely, 2^53408844 is an apocalyptic number.

It is an amenable number.

53408844 is an abundant number, since it is smaller than the sum of its proper divisors (83452972).

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

53408844 is a wasteful number, since it uses less digits than its factorization.

53408844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20406 (or 20401 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 53408844 is about 7308.1354667247. The cubic root of 53408844 is about 376.5919734247.

The spelling of 53408844 in words is "fifty-three million, four hundred eight thousand, eight hundred forty-four".