55530027780 has 24 divisors (see below), whose sum is σ = 155484077952. Its totient is φ = 14808007392.

The previous prime is 55530027731. The next prime is 55530027781. The reversal of 55530027780 is 8772003555.

It is not an unprimeable number, because it can be changed into a prime (55530027781) 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, 462750172 + ... + 462750291.

It is an arithmetic number, because the mean of its divisors is an integer number (6478503248).

Almost surely, 2^55530027780 is an apocalyptic number.

It is an amenable number.

55530027780 is an abundant number, since it is smaller than the sum of its proper divisors (99954050172).

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

55530027780 is a wasteful number, since it uses less digits than its factorization.

55530027780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925500475 (or 925500473 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 55530027780 in words is "fifty-five billion, five hundred thirty million, twenty-seven thousand, seven hundred eighty".