55996331 has 2 divisors, whose sum is σ = 55996332. Its totient is φ = 55996330.

The previous prime is 55996321. The next prime is 55996337. The reversal of 55996331 is 13369955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55996331 - 2⁶ = 55996267 is a prime.

It is a super-2 number, since 2×55996331² = 6271178170923122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55996337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27998165 + 27998166.

It is an arithmetic number, because the mean of its divisors is an integer number (27998166).

Almost surely, 2^55996331 is an apocalyptic number.

55996331 is a deficient number, since it is larger than the sum of its proper divisors (1).

55996331 is an equidigital number, since it uses as much as digits as its factorization.

55996331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350, while the sum is 41.

The square root of 55996331 is about 7483.0696241583. The cubic root of 55996331 is about 382.5778809619.

The spelling of 55996331 in words is "fifty-five million, nine hundred ninety-six thousand, three hundred thirty-one".