55956311 has 4 divisors (see below), whose sum is σ = 58901400. Its totient is φ = 53011224.

The previous prime is 55956281. The next prime is 55956319. The reversal of 55956311 is 11365955.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55956311 - 2¹⁰ = 55955287 is a prime.

It is a super-2 number, since 2×55956311² = 6262217481457442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55956319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472516 + ... + 1472553.

It is an arithmetic number, because the mean of its divisors is an integer number (14725350).

Almost surely, 2^55956311 is an apocalyptic number.

55956311 is a deficient number, since it is larger than the sum of its proper divisors (2945089).

55956311 is a wasteful number, since it uses less digits than its factorization.

55956311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945088.

The product of its digits is 20250, while the sum is 35.

The square root of 55956311 is about 7480.3951098856. The cubic root of 55956311 is about 382.4867177526.

The spelling of 55956311 in words is "fifty-five million, nine hundred fifty-six thousand, three hundred eleven".