551506560 has 128 divisors (see below), whose sum is σ = 1917812160. Its totient is φ = 133693440.

The previous prime is 551506513. The next prime is 551506583. The reversal of 551506560 is 65605155.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8064 + ... + 34176.

Almost surely, 2^551506560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551506560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958906080).

551506560 is an abundant number, since it is smaller than the sum of its proper divisors (1366305600).

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

551506560 is a wasteful number, since it uses less digits than its factorization.

551506560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26146 (or 26134 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 551506560 is about 23484.1768005608. The cubic root of 551506560 is about 820.0686835191.

The spelling of 551506560 in words is "five hundred fifty-one million, five hundred six thousand, five hundred sixty".