55326121931 has 2 divisors, whose sum is σ = 55326121932. Its totient is φ = 55326121930.

The previous prime is 55326121853. The next prime is 55326121973. The reversal of 55326121931 is 13912162355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55326121931 - 2²⁶ = 55259013067 is a prime.

It is a super-2 number, since 2×55326121931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55326126931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27663060965 + 27663060966.

It is an arithmetic number, because the mean of its divisors is an integer number (27663060966).

Almost surely, 2^55326121931 is an apocalyptic number.

55326121931 is a deficient number, since it is larger than the sum of its proper divisors (1).

55326121931 is an equidigital number, since it uses as much as digits as its factorization.

55326121931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The spelling of 55326121931 in words is "fifty-five billion, three hundred twenty-six million, one hundred twenty-one thousand, nine hundred thirty-one".