53624813 has 4 divisors (see below), whose sum is σ = 58499808. Its totient is φ = 48749820.

The previous prime is 53624789. The next prime is 53624819. The reversal of 53624813 is 31842635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53624813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53624813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53624819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437481 + ... + 2437502.

It is an arithmetic number, because the mean of its divisors is an integer number (14624952).

Almost surely, 2^53624813 is an apocalyptic number.

It is an amenable number.

53624813 is a deficient number, since it is larger than the sum of its proper divisors (4874995).

53624813 is a wasteful number, since it uses less digits than its factorization.

53624813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874994.

The product of its digits is 17280, while the sum is 32.

The square root of 53624813 is about 7322.8964897778. The cubic root of 53624813 is about 377.0988982705.

The spelling of 53624813 in words is "fifty-three million, six hundred twenty-four thousand, eight hundred thirteen".