55313013 has 24 divisors (see below), whose sum is σ = 86134752. Its totient is φ = 31481184.

The previous prime is 55312993. The next prime is 55313023. The reversal of 55313013 is 31031355.

It is a happy number.

It is not a de Polignac number, because 55313013 - 2⁵ = 55312981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55313023) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 46006 + ... + 47192.

It is an arithmetic number, because the mean of its divisors is an integer number (3588948).

Almost surely, 2^55313013 is an apocalyptic number.

It is an amenable number.

55313013 is a deficient number, since it is larger than the sum of its proper divisors (30821739).

55313013 is a wasteful number, since it uses less digits than its factorization.

55313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 55313013 is about 7437.2718788545. The cubic root of 55313013 is about 381.0153203035.

Adding to 55313013 its reverse (31031355), we get a palindrome (86344368).

The spelling of 55313013 in words is "fifty-five million, three hundred thirteen thousand, thirteen".