55305813975 has 48 divisors (see below), whose sum is σ = 96854327712. Its totient is φ = 27750850560.

The previous prime is 55305813971. The next prime is 55305813989. The reversal of 55305813975 is 57931850355.

It is a happy number.

It is not a de Polignac number, because 55305813975 - 2² = 55305813971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55305813971) 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, 4217529 + ... + 4230621.

It is an arithmetic number, because the mean of its divisors is an integer number (2017798494).

Almost surely, 2^55305813975 is an apocalyptic number.

55305813975 is a deficient number, since it is larger than the sum of its proper divisors (41548513737).

55305813975 is a wasteful number, since it uses less digits than its factorization.

55305813975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16436 (or 16431 counting only the distinct ones).

The product of its (nonzero) digits is 2835000, while the sum is 51.

The spelling of 55305813975 in words is "fifty-five billion, three hundred five million, eight hundred thirteen thousand, nine hundred seventy-five".