551225971 has 4 divisors (see below), whose sum is σ = 556283200. Its totient is φ = 546168744.

The previous prime is 551225959. The next prime is 551225977. The reversal of 551225971 is 179522155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179522155 = 5 ⋅35904431.

It is a cyclic number.

It is not a de Polignac number, because 551225971 - 2²³ = 542837363 is a prime.

It is a super-2 number, since 2×551225971² = 607700142209785682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551225971.

It is not an unprimeable number, because it can be changed into a prime (551225977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2528451 + ... + 2528668.

It is an arithmetic number, because the mean of its divisors is an integer number (139070800).

Almost surely, 2^551225971 is an apocalyptic number.

551225971 is a deficient number, since it is larger than the sum of its proper divisors (5057229).

551225971 is a wasteful number, since it uses less digits than its factorization.

551225971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057228.

The product of its digits is 31500, while the sum is 37.

The square root of 551225971 is about 23478.2020393385. The cubic root of 551225971 is about 819.9295849707.

The spelling of 551225971 in words is "five hundred fifty-one million, two hundred twenty-five thousand, nine hundred seventy-one".