53436645 has 64 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 26568000.

The previous prime is 53436637. The next prime is 53436679. The reversal of 53436645 is 54663435.

53436645 is a `hidden beast` number, since 5 + 3 + 4 + 3 + 6 + 645 = 666.

It is not a de Polignac number, because 53436645 - 2³ = 53436637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212770 + ... + 213020.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^53436645 is an apocalyptic number.

It is an amenable number.

53436645 is a deficient number, since it is larger than the sum of its proper divisors (48169755).

53436645 is a wasteful number, since it uses less digits than its factorization.

53436645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 53436645 is about 7310.0372776067. The cubic root of 53436645 is about 376.6573047855.

The spelling of 53436645 in words is "fifty-three million, four hundred thirty-six thousand, six hundred forty-five".