52645644 has 36 divisors (see below), whose sum is σ = 134403360. Its totient is φ = 17373600.

The previous prime is 52645633. The next prime is 52645667. The reversal of 52645644 is 44654625.

52645644 is a `hidden beast` number, since 5 + 2 + 6 + 4 + 5 + 644 = 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 = 52645599 and 52645608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3604 + ... + 10875.

Almost surely, 2^52645644 is an apocalyptic number.

It is an amenable number.

52645644 is an abundant number, since it is smaller than the sum of its proper divisors (81757716).

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

52645644 is a wasteful number, since it uses less digits than its factorization.

52645644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14590 (or 14585 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 52645644 is about 7255.7318032022. The cubic root of 52645644 is about 374.7895565916.

The spelling of 52645644 in words is "fifty-two million, six hundred forty-five thousand, six hundred forty-four".