551631125 has 8 divisors (see below), whose sum is σ = 688435800. Its totient is φ = 441304800.

The previous prime is 551631121. The next prime is 551631137. The reversal of 551631125 is 521136155.

It can be written as a sum of positive squares in 4 ways, for example, as 4866436 + 546764689 = 2206^2 + 23383^2 .

It is not a de Polignac number, because 551631125 - 2² = 551631121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551631121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2206400 + ... + 2206649.

It is an arithmetic number, because the mean of its divisors is an integer number (86054475).

Almost surely, 2^551631125 is an apocalyptic number.

It is an amenable number.

551631125 is a deficient number, since it is larger than the sum of its proper divisors (136804675).

551631125 is an equidigital number, since it uses as much as digits as its factorization.

551631125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413064 (or 4413054 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 551631125 is about 23486.8287557090. The cubic root of 551631125 is about 820.1304199657.

The spelling of 551631125 in words is "five hundred fifty-one million, six hundred thirty-one thousand, one hundred twenty-five".