55938899 has 2 divisors, whose sum is σ = 55938900. Its totient is φ = 55938898.

The previous prime is 55938893. The next prime is 55938901. The reversal of 55938899 is 99883955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55938899 - 2⁸ = 55938643 is a prime.

Together with 55938901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55938893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27969449 + 27969450.

It is an arithmetic number, because the mean of its divisors is an integer number (27969450).

Almost surely, 2^55938899 is an apocalyptic number.

55938899 is a deficient number, since it is larger than the sum of its proper divisors (1).

55938899 is an equidigital number, since it uses as much as digits as its factorization.

55938899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 56.

The square root of 55938899 is about 7479.2311770663. The cubic root of 55938899 is about 382.4470406693.

The spelling of 55938899 in words is "fifty-five million, nine hundred thirty-eight thousand, eight hundred ninety-nine".