55265318831 has 2 divisors, whose sum is σ = 55265318832. Its totient is φ = 55265318830.

The previous prime is 55265318783. The next prime is 55265318833. The reversal of 55265318831 is 13881356255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55265318831 - 2¹⁸ = 55265056687 is a prime.

It is a super-2 number, since 2×55265318831² (a number of 22 digits) contains 22 as substring.

Together with 55265318833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55265318833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27632659415 + 27632659416.

It is an arithmetic number, because the mean of its divisors is an integer number (27632659416).

Almost surely, 2^55265318831 is an apocalyptic number.

55265318831 is a deficient number, since it is larger than the sum of its proper divisors (1).

55265318831 is an equidigital number, since it uses as much as digits as its factorization.

55265318831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 47.

The spelling of 55265318831 in words is "fifty-five billion, two hundred sixty-five million, three hundred eighteen thousand, eight hundred thirty-one".