55510488777 has 4 divisors (see below), whose sum is σ = 74013985040. Its totient is φ = 37006992516.

The previous prime is 55510488731. The next prime is 55510488791. The reversal of 55510488777 is 77788401555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55510488777 - 2³⁰ = 54436746953 is a prime.

It is a super-2 number, since 2×55510488777² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55510486777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9251748127 + ... + 9251748132.

It is an arithmetic number, because the mean of its divisors is an integer number (18503496260).

Almost surely, 2^55510488777 is an apocalyptic number.

It is an amenable number.

55510488777 is a deficient number, since it is larger than the sum of its proper divisors (18503496263).

55510488777 is a wasteful number, since it uses less digits than its factorization.

55510488777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18503496262.

The product of its (nonzero) digits is 10976000, while the sum is 57.

The spelling of 55510488777 in words is "fifty-five billion, five hundred ten million, four hundred eighty-eight thousand, seven hundred seventy-seven".