55553013 has 16 divisors (see below), whose sum is σ = 84053760. Its totient is φ = 36246528.

The previous prime is 55552993. The next prime is 55553053. The reversal of 55553013 is 31035555.

It is not a de Polignac number, because 55553013 - 2⁶ = 55552949 is a prime.

It is a super-2 number, since 2×55553013² = 6172274506756338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55553053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20620 + ... + 23157.

It is an arithmetic number, because the mean of its divisors is an integer number (5253360).

Almost surely, 2^55553013 is an apocalyptic number.

It is an amenable number.

55553013 is a deficient number, since it is larger than the sum of its proper divisors (28500747).

55553013 is a wasteful number, since it uses less digits than its factorization.

55553013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43833 (or 43827 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 55553013 is about 7453.3893632360. The cubic root of 55553013 is about 381.5655930965.

Adding to 55553013 its reverse (31035555), we get a palindrome (86588568).

The spelling of 55553013 in words is "fifty-five million, five hundred fifty-three thousand, thirteen".