555251056440 has 64 divisors (see below), whose sum is σ = 1738177228800. Its totient is φ = 141629254272.

The previous prime is 555251056439. The next prime is 555251056519. The reversal of 555251056440 is 44650152555.

It is a junction number, because it is equal to n+sod(n) for n = 555251056392 and 555251056401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100586200 + ... + 100591719.

It is an arithmetic number, because the mean of its divisors is an integer number (27159019200).

Almost surely, 2^555251056440 is an apocalyptic number.

It is an amenable number.

555251056440 is an abundant number, since it is smaller than the sum of its proper divisors (1182926172360).

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

555251056440 is a wasteful number, since it uses less digits than its factorization.

555251056440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201177956 (or 201177952 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 555251056440 in words is "five hundred fifty-five billion, two hundred fifty-one million, fifty-six thousand, four hundred forty".