55959231 has 4 divisors (see below), whose sum is σ = 74612312. Its totient is φ = 37306152.

The previous prime is 55959173. The next prime is 55959259. The reversal of 55959231 is 13295955.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55959231 - 2⁷ = 55959103 is a prime.

It is a super-2 number, since 2×55959231² = 6262871068222722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55959231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55959131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9326536 + ... + 9326541.

It is an arithmetic number, because the mean of its divisors is an integer number (18653078).

Almost surely, 2^55959231 is an apocalyptic number.

55959231 is a deficient number, since it is larger than the sum of its proper divisors (18653081).

55959231 is a wasteful number, since it uses less digits than its factorization.

55959231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18653080.

The product of its digits is 60750, while the sum is 39.

The square root of 55959231 is about 7480.5902841955. The cubic root of 55959231 is about 382.4933708108.

The spelling of 55959231 in words is "fifty-five million, nine hundred fifty-nine thousand, two hundred thirty-one".