55308811551 has 48 divisors (see below), whose sum is σ = 93286658304. Its totient is φ = 28452517632.

The previous prime is 55308811543. The next prime is 55308811553. The reversal of 55308811551 is 15511880355.

It is not a de Polignac number, because 55308811551 - 2³ = 55308811543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55308811553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42420 + ... + 335286.

It is an arithmetic number, because the mean of its divisors is an integer number (1943472048).

Almost surely, 2^55308811551 is an apocalyptic number.

55308811551 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55308811551 is a deficient number, since it is larger than the sum of its proper divisors (37977846753).

55308811551 is a wasteful number, since it uses less digits than its factorization.

55308811551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292940 (or 292917 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 42.

The spelling of 55308811551 in words is "fifty-five billion, three hundred eight million, eight hundred eleven thousand, five hundred fifty-one".