551161164 has 24 divisors (see below), whose sum is σ = 1288144368. Its totient is φ = 183420160.

The previous prime is 551161159. The next prime is 551161181. The reversal of 551161164 is 461161155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29817 + ... + 44624.

It is an arithmetic number, because the mean of its divisors is an integer number (53672682).

Almost surely, 2^551161164 is an apocalyptic number.

It is an amenable number.

551161164 is an abundant number, since it is smaller than the sum of its proper divisors (736983204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551161164 is a wasteful number, since it uses less digits than its factorization.

551161164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75065 (or 75063 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 551161164 is about 23476.8218462380. The cubic root of 551161164 is about 819.8974509870.

Subtracting from 551161164 its reverse (461161155), we obtain a palindrome (90000009).

It can be divided in two parts, 55116 and 1164, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 551161164 in words is "five hundred fifty-one million, one hundred sixty-one thousand, one hundred sixty-four".