551020560 has 40 divisors (see below), whose sum is σ = 1708164480. Its totient is φ = 146938752.

The previous prime is 551020559. The next prime is 551020573. The reversal of 551020560 is 65020155.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 551020560.

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, 1147720 + ... + 1148199.

It is an arithmetic number, because the mean of its divisors is an integer number (42704112).

Almost surely, 2^551020560 is an apocalyptic number.

It is an amenable number.

551020560 is an abundant number, since it is smaller than the sum of its proper divisors (1157143920).

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

551020560 is a wasteful number, since it uses less digits than its factorization.

551020560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295935 (or 2295929 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 551020560 is about 23473.8271272496. The cubic root of 551020560 is about 819.8277250623.

The spelling of 551020560 in words is "five hundred fifty-one million, twenty thousand, five hundred sixty".