55515954751 has 2 divisors, whose sum is σ = 55515954752. Its totient is φ = 55515954750.

The previous prime is 55515954731. The next prime is 55515954761. The reversal of 55515954751 is 15745951555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55515954751 - 2²⁷ = 55381737023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55515954701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27757977375 + 27757977376.

It is an arithmetic number, because the mean of its divisors is an integer number (27757977376).

Almost surely, 2^55515954751 is an apocalyptic number.

55515954751 is a deficient number, since it is larger than the sum of its proper divisors (1).

55515954751 is an equidigital number, since it uses as much as digits as its factorization.

55515954751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3937500, while the sum is 52.

The spelling of 55515954751 in words is "fifty-five billion, five hundred fifteen million, nine hundred fifty-four thousand, seven hundred fifty-one".