551390516 has 12 divisors (see below), whose sum is σ = 966467040. Its totient is φ = 275257080.

The previous prime is 551390501. The next prime is 551390519. The reversal of 551390516 is 615093155.

It is a happy number.

It is a super-2 number, since 2×551390516² = 608063002269492512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551390519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106706 + ... + 111753.

It is an arithmetic number, because the mean of its divisors is an integer number (80538920).

Almost surely, 2^551390516 is an apocalyptic number.

It is an amenable number.

551390516 is a deficient number, since it is larger than the sum of its proper divisors (415076524).

551390516 is a wasteful number, since it uses less digits than its factorization.

551390516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219094 (or 219092 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 551390516 is about 23481.7059857243. The cubic root of 551390516 is about 820.0111618548.

The spelling of 551390516 in words is "five hundred fifty-one million, three hundred ninety thousand, five hundred sixteen".