551015055560 has 32 divisors (see below), whose sum is σ = 1242728767800. Its totient is φ = 219882485760.

The previous prime is 551015055557. The next prime is 551015055607. The reversal of 551015055560 is 65550510155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 452151346084 + 98863709476 = 672422^2 + 314426^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16343465 + ... + 16377144.

Almost surely, 2^551015055560 is an apocalyptic number.

It is an amenable number.

551015055560 is an abundant number, since it is smaller than the sum of its proper divisors (691713712240).

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

551015055560 is a wasteful number, since it uses less digits than its factorization.

551015055560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32721041 (or 32721037 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 551015055560 in words is "five hundred fifty-one billion, fifteen million, fifty-five thousand, five hundred sixty".