55553000556 has 24 divisors (see below), whose sum is σ = 133805077504. Its totient is φ = 17920322640.

The previous prime is 55553000551. The next prime is 55553000597. The reversal of 55553000556 is 65500035555.

It is a super-2 number, since 2×55553000556² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55553000551) 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, 74667640 + ... + 74668383.

Almost surely, 2^55553000556 is an apocalyptic number.

It is an amenable number.

55553000556 is an abundant number, since it is smaller than the sum of its proper divisors (78252076948).

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

55553000556 is a wasteful number, since it uses less digits than its factorization.

55553000556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149336061 (or 149336059 counting only the distinct ones).

The product of its (nonzero) digits is 281250, while the sum is 39.

The spelling of 55553000556 in words is "fifty-five billion, five hundred fifty-three million, five hundred fifty-six", and thus it is an aban number.