53621265 has 16 divisors (see below), whose sum is σ = 87249600. Its totient is φ = 28112832.

The previous prime is 53621221. The next prime is 53621297. The reversal of 53621265 is 56212635.

It is not a de Polignac number, because 53621265 - 2¹² = 53617169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29410 + ... + 31179.

It is an arithmetic number, because the mean of its divisors is an integer number (5453100).

Almost surely, 2^53621265 is an apocalyptic number.

It is an amenable number.

53621265 is a deficient number, since it is larger than the sum of its proper divisors (33628335).

53621265 is a wasteful number, since it uses less digits than its factorization.

53621265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60656.

The product of its digits is 10800, while the sum is 30.

The square root of 53621265 is about 7322.6542319025. The cubic root of 53621265 is about 377.0905813719.

The spelling of 53621265 in words is "fifty-three million, six hundred twenty-one thousand, two hundred sixty-five".