551225420460 has 144 divisors (see below), whose sum is σ = 1964367044640. Its totient is φ = 123351137280.

The previous prime is 551225420429. The next prime is 551225420519. The reversal of 551225420460 is 64024522155.

551225420460 is a `hidden beast` number, since 5 + 5 + 1 + 225 + 420 + 4 + 6 + 0 = 666.

It is a super-2 number, since 2×551225420460² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10681825 + ... + 10733304.

It is an arithmetic number, because the mean of its divisors is an integer number (13641437810).

Almost surely, 2^551225420460 is an apocalyptic number.

It is an amenable number.

551225420460 is an abundant number, since it is smaller than the sum of its proper divisors (1413141624180).

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

551225420460 is a wasteful number, since it uses less digits than its factorization.

551225420460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415168 (or 21415163 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 551225420460 in words is "five hundred fifty-one billion, two hundred twenty-five million, four hundred twenty thousand, four hundred sixty".