551161617 has 16 divisors (see below), whose sum is σ = 784750080. Its totient is φ = 343324800.

The previous prime is 551161561. The next prime is 551161619. The reversal of 551161617 is 716161155.

It is not a de Polignac number, because 551161617 - 2¹¹ = 551159569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551161619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99484 + ... + 104877.

It is an arithmetic number, because the mean of its divisors is an integer number (49046880).

Almost surely, 2^551161617 is an apocalyptic number.

It is an amenable number.

551161617 is a deficient number, since it is larger than the sum of its proper divisors (233588463).

551161617 is a wasteful number, since it uses less digits than its factorization.

551161617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204424.

The product of its digits is 6300, while the sum is 33.

The square root of 551161617 is about 23476.8314940496. The cubic root of 551161617 is about 819.8976756118.

The spelling of 551161617 in words is "five hundred fifty-one million, one hundred sixty-one thousand, six hundred seventeen".