551870225 has 12 divisors (see below), whose sum is σ = 684889200. Its totient is φ = 441128400.

The previous prime is 551870177. The next prime is 551870227. The reversal of 551870225 is 522078155.

It is not a de Polignac number, because 551870225 - 2¹⁶ = 551804689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551870227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23726 + ... + 40824.

It is an arithmetic number, because the mean of its divisors is an integer number (57074100).

Almost surely, 2^551870225 is an apocalyptic number.

It is an amenable number.

551870225 is a deficient number, since it is larger than the sum of its proper divisors (133018975).

551870225 is a wasteful number, since it uses less digits than its factorization.

551870225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18400 (or 18395 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 551870225 is about 23491.9182911911. The cubic root of 551870225 is about 820.2488957911.

The spelling of 551870225 in words is "five hundred fifty-one million, eight hundred seventy thousand, two hundred twenty-five".