55242131251 has 2 divisors, whose sum is σ = 55242131252. Its totient is φ = 55242131250.

The previous prime is 55242131183. The next prime is 55242131257. The reversal of 55242131251 is 15213124255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55242131251 - 2²³ = 55233742643 is a prime.

It is not a weakly prime, because it can be changed into another prime (55242131257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621065625 + 27621065626.

It is an arithmetic number, because the mean of its divisors is an integer number (27621065626).

Almost surely, 2^55242131251 is an apocalyptic number.

55242131251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55242131251 is an equidigital number, since it uses as much as digits as its factorization.

55242131251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The spelling of 55242131251 in words is "fifty-five billion, two hundred forty-two million, one hundred thirty-one thousand, two hundred fifty-one".