55956308251 has 2 divisors, whose sum is σ = 55956308252. Its totient is φ = 55956308250.

The previous prime is 55956308209. The next prime is 55956308267. The reversal of 55956308251 is 15280365955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55956308251 - 2¹⁵ = 55956275483 is a prime.

It is a super-2 number, since 2×55956308251² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55956308195 and 55956308204.

It is not a weakly prime, because it can be changed into another prime (55956378251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27978154125 + 27978154126.

It is an arithmetic number, because the mean of its divisors is an integer number (27978154126).

Almost surely, 2^55956308251 is an apocalyptic number.

55956308251 is a deficient number, since it is larger than the sum of its proper divisors (1).

55956308251 is an equidigital number, since it uses as much as digits as its factorization.

55956308251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620000, while the sum is 49.

The spelling of 55956308251 in words is "fifty-five billion, nine hundred fifty-six million, three hundred eight thousand, two hundred fifty-one".