53621315 has 16 divisors (see below), whose sum is σ = 74325600. Its totient is φ = 36702720.

The previous prime is 53621297. The next prime is 53621327. The reversal of 53621315 is 51312635.

It is a de Polignac number, because none of the positive numbers 2^k-53621315 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27740 + ... + 29609.

It is an arithmetic number, because the mean of its divisors is an integer number (4645350).

Almost surely, 2^53621315 is an apocalyptic number.

53621315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53621315 is a deficient number, since it is larger than the sum of its proper divisors (20704285).

53621315 is a wasteful number, since it uses less digits than its factorization.

53621315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57382.

The product of its digits is 2700, while the sum is 26.

The square root of 53621315 is about 7322.6576459643. The cubic root of 53621315 is about 377.0906985799.

The spelling of 53621315 in words is "fifty-three million, six hundred twenty-one thousand, three hundred fifteen".