55992899 has 2 divisors, whose sum is σ = 55992900. Its totient is φ = 55992898.

The previous prime is 55992889. The next prime is 55992907. The reversal of 55992899 is 99829955.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55992899 is a prime.

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 (55992889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27996449 + 27996450.

It is an arithmetic number, because the mean of its divisors is an integer number (27996450).

Almost surely, 2^55992899 is an apocalyptic number.

55992899 is a deficient number, since it is larger than the sum of its proper divisors (1).

55992899 is an equidigital number, since it uses as much as digits as its factorization.

55992899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 56.

The square root of 55992899 is about 7482.8403029866. The cubic root of 55992899 is about 382.5700647705.

The spelling of 55992899 in words is "fifty-five million, nine hundred ninety-two thousand, eight hundred ninety-nine".