55613361 has 16 divisors (see below), whose sum is σ = 79718400. Its totient is φ = 34375248.

The previous prime is 55613359. The next prime is 55613381. The reversal of 55613361 is 16331655.

55613361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55613361 - 2¹ = 55613359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55613321) 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 15 ways as a sum of consecutive naturals, for example, 7701 + ... + 13058.

It is an arithmetic number, because the mean of its divisors is an integer number (4982400).

Almost surely, 2^55613361 is an apocalyptic number.

It is an amenable number.

55613361 is a deficient number, since it is larger than the sum of its proper divisors (24105039).

55613361 is a wasteful number, since it uses less digits than its factorization.

55613361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20828.

The product of its digits is 8100, while the sum is 30.

The square root of 55613361 is about 7457.4366239345. The cubic root of 55613361 is about 381.7037097417.

The spelling of 55613361 in words is "fifty-five million, six hundred thirteen thousand, three hundred sixty-one".