551561315 has 24 divisors (see below), whose sum is σ = 684789120. Its totient is φ = 426452480.

The previous prime is 551561293. The next prime is 551561327. The reversal of 551561315 is 513165155.

It is not a de Polignac number, because 551561315 - 2¹² = 551557219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1151246 + ... + 1151724.

It is an arithmetic number, because the mean of its divisors is an integer number (28532880).

Almost surely, 2^551561315 is an apocalyptic number.

551561315 is a deficient number, since it is larger than the sum of its proper divisors (133227805).

551561315 is a wasteful number, since it uses less digits than its factorization.

551561315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 662 counting only the distinct ones).

The product of its digits is 11250, while the sum is 32.

The square root of 551561315 is about 23485.3425565820. The cubic root of 551561315 is about 820.0958221355.

The spelling of 551561315 in words is "five hundred fifty-one million, five hundred sixty-one thousand, three hundred fifteen".