551572217 has 8 divisors (see below), whose sum is σ = 630773376. Its totient is φ = 472472352.

The previous prime is 551572201. The next prime is 551572237. The reversal of 551572217 is 712275155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551572217 - 2⁴ = 551572201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551572237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13268 + ... + 35765.

It is an arithmetic number, because the mean of its divisors is an integer number (78846672).

Almost surely, 2^551572217 is an apocalyptic number.

It is an amenable number.

551572217 is a deficient number, since it is larger than the sum of its proper divisors (79201159).

551572217 is a wasteful number, since it uses less digits than its factorization.

551572217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50647.

The product of its digits is 24500, while the sum is 35.

The square root of 551572217 is about 23485.5746576489. The cubic root of 551572217 is about 820.1012253581.

The spelling of 551572217 in words is "five hundred fifty-one million, five hundred seventy-two thousand, two hundred seventeen".