55013657 has 4 divisors (see below), whose sum is σ = 55028580. Its totient is φ = 54998736.

The previous prime is 55013653. The next prime is 55013663. The reversal of 55013657 is 75631055.

55013657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 23921881 + 31091776 = 4891^2 + 5576^2 .

It is a cyclic number.

It is not a de Polignac number, because 55013657 - 2² = 55013653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55013653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519 + ... + 10787.

It is an arithmetic number, because the mean of its divisors is an integer number (13757145).

Almost surely, 2^55013657 is an apocalyptic number.

It is an amenable number.

55013657 is a deficient number, since it is larger than the sum of its proper divisors (14923).

55013657 is an equidigital number, since it uses as much as digits as its factorization.

55013657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14922.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 55013657 is about 7417.1191846970. The cubic root of 55013657 is about 380.3267203934.

The spelling of 55013657 in words is "fifty-five million, thirteen thousand, six hundred fifty-seven".