55988913 has 4 divisors (see below), whose sum is σ = 74651888. Its totient is φ = 37325940.

The previous prime is 55988909. The next prime is 55988917. The reversal of 55988913 is 31988955.

55988913 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 Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (55988909) and next prime (55988917).

It is not a de Polignac number, because 55988913 - 2² = 55988909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55988917) 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, 9331483 + ... + 9331488.

It is an arithmetic number, because the mean of its divisors is an integer number (18662972).

Almost surely, 2^55988913 is an apocalyptic number.

It is an amenable number.

55988913 is a deficient number, since it is larger than the sum of its proper divisors (18662975).

55988913 is a wasteful number, since it uses less digits than its factorization.

55988913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18662974.

The product of its digits is 388800, while the sum is 48.

The square root of 55988913 is about 7482.5739555316. The cubic root of 55988913 is about 382.5609864737.

The spelling of 55988913 in words is "fifty-five million, nine hundred eighty-eight thousand, nine hundred thirteen".