551561233 has 8 divisors (see below), whose sum is σ = 567173376. Its totient is φ = 536052000.

The previous prime is 551561201. The next prime is 551561239. The reversal of 551561233 is 332165155.

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 551561233 - 2⁵ = 551561201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551561195 and 551561204.

It is not an unprimeable number, because it can be changed into a prime (551561239) 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, 14793 + ... + 36358.

It is an arithmetic number, because the mean of its divisors is an integer number (70896672).

Almost surely, 2^551561233 is an apocalyptic number.

It is an amenable number.

551561233 is a deficient number, since it is larger than the sum of its proper divisors (15612143).

551561233 is a wasteful number, since it uses less digits than its factorization.

551561233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51455.

The product of its digits is 13500, while the sum is 31.

The square root of 551561233 is about 23485.3408108122. The cubic root of 551561233 is about 820.0957814946.

The spelling of 551561233 in words is "five hundred fifty-one million, five hundred sixty-one thousand, two hundred thirty-three".