55002502780 has 24 divisors (see below), whose sum is σ = 122299683408. Its totient is φ = 20706824448.

The previous prime is 55002502733. The next prime is 55002502781. The reversal of 55002502780 is 8720520055.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55002502781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80885694 + ... + 80886373.

It is an arithmetic number, because the mean of its divisors is an integer number (5095820142).

Almost surely, 2^55002502780 is an apocalyptic number.

It is an amenable number.

55002502780 is an abundant number, since it is smaller than the sum of its proper divisors (67297180628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55002502780 is a wasteful number, since it uses less digits than its factorization.

55002502780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161772093 (or 161772091 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 55002502780 in words is "fifty-five billion, two million, five hundred two thousand, seven hundred eighty".