55595913 has 4 divisors (see below), whose sum is σ = 74127888. Its totient is φ = 37063940.

The previous prime is 55595909. The next prime is 55595977. The reversal of 55595913 is 31959555.

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 a cyclic number.

It is not a de Polignac number, because 55595913 - 2² = 55595909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55595213) 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 3 ways as a sum of consecutive naturals, for example, 9265983 + ... + 9265988.

It is an arithmetic number, because the mean of its divisors is an integer number (18531972).

Almost surely, 2^55595913 is an apocalyptic number.

It is an amenable number.

55595913 is a deficient number, since it is larger than the sum of its proper divisors (18531975).

55595913 is a wasteful number, since it uses less digits than its factorization.

55595913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18531974.

The product of its digits is 151875, while the sum is 42.

The square root of 55595913 is about 7456.2666931917. The cubic root of 55595913 is about 381.6637873033.

The spelling of 55595913 in words is "fifty-five million, five hundred ninety-five thousand, nine hundred thirteen".