551430625 has 10 divisors (see below), whose sum is σ = 689068490. Its totient is φ = 441144000.

The previous prime is 551430623. The next prime is 551430631. The reversal of 551430625 is 526034155.

It can be written as a sum of positive squares in 5 ways, for example, as 312016896 + 239413729 = 17664^2 + 15473^2 .

It is not a de Polignac number, because 551430625 - 2¹ = 551430623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551430623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 440520 + ... + 441769.

It is an arithmetic number, because the mean of its divisors is an integer number (68906849).

Almost surely, 2^551430625 is an apocalyptic number.

It is an amenable number.

551430625 is a deficient number, since it is larger than the sum of its proper divisors (137637865).

551430625 is an frugal number, since it uses more digits than its factorization.

551430625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882309 (or 882294 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 551430625 is about 23482.5600180219. The cubic root of 551430625 is about 820.0310443333.

The spelling of 551430625 in words is "five hundred fifty-one million, four hundred thirty thousand, six hundred twenty-five".