551625480 has 384 divisors, whose sum is σ = 2217196800. Its totient is φ = 116121600.

The previous prime is 551625467. The next prime is 551625497. The reversal of 551625480 is 84526155.

551625480 is a `hidden beast` number, since 5 + 51 + 62 + 548 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1962940 + ... + 1963220.

It is an arithmetic number, because the mean of its divisors is an integer number (5773950).

Almost surely, 2^551625480 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 551625480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108598400).

551625480 is an abundant number, since it is smaller than the sum of its proper divisors (1665571320).

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

551625480 is a wasteful number, since it uses less digits than its factorization.

551625480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 551625480 is about 23486.7085816638. The cubic root of 551625480 is about 820.1276224126.

The spelling of 551625480 in words is "five hundred fifty-one million, six hundred twenty-five thousand, four hundred eighty".