551229975 has 48 divisors (see below), whose sum is σ = 1024934400. Its totient is φ = 290417760.

The previous prime is 551229967. The next prime is 551229997. The reversal of 551229975 is 579922155.

551229975 is a `hidden beast` number, since 551 + 2 + 2 + 9 + 97 + 5 = 666.

It is not a de Polignac number, because 551229975 - 2³ = 551229967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 551229975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51106 + ... + 60944.

It is an arithmetic number, because the mean of its divisors is an integer number (21352800).

Almost surely, 2^551229975 is an apocalyptic number.

551229975 is a deficient number, since it is larger than the sum of its proper divisors (473704425).

551229975 is a wasteful number, since it uses less digits than its factorization.

551229975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941 (or 9930 counting only the distinct ones).

The product of its digits is 283500, while the sum is 45.

The square root of 551229975 is about 23478.2873097677. The cubic root of 551229975 is about 819.9315702365.

The spelling of 551229975 in words is "five hundred fifty-one million, two hundred twenty-nine thousand, nine hundred seventy-five".