55965311 has 2 divisors, whose sum is σ = 55965312. Its totient is φ = 55965310.

The previous prime is 55965307. The next prime is 55965341. The reversal of 55965311 is 11356955.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55965311 - 2² = 55965307 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55965341) 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 as a sum of consecutive naturals, namely, 27982655 + 27982656.

It is an arithmetic number, because the mean of its divisors is an integer number (27982656).

Almost surely, 2^55965311 is an apocalyptic number.

55965311 is a deficient number, since it is larger than the sum of its proper divisors (1).

55965311 is an equidigital number, since it uses as much as digits as its factorization.

55965311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 55965311 is about 7480.9966582000. The cubic root of 55965311 is about 382.5072230114.

The spelling of 55965311 in words is "fifty-five million, nine hundred sixty-five thousand, three hundred eleven".