55990252979 has 2 divisors, whose sum is σ = 55990252980. Its totient is φ = 55990252978.

The previous prime is 55990252949. The next prime is 55990253017. The reversal of 55990252979 is 97925209955.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55990252979 is a prime.

It is not a weakly prime, because it can be changed into another prime (55990252949) 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, 27995126489 + 27995126490.

It is an arithmetic number, because the mean of its divisors is an integer number (27995126490).

Almost surely, 2^55990252979 is an apocalyptic number.

55990252979 is a deficient number, since it is larger than the sum of its proper divisors (1).

55990252979 is an equidigital number, since it uses as much as digits as its factorization.

55990252979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22963500, while the sum is 62.

The spelling of 55990252979 in words is "fifty-five billion, nine hundred ninety million, two hundred fifty-two thousand, nine hundred seventy-nine".