551297966 has 8 divisors (see below), whose sum is σ = 827317584. Its totient is φ = 275525440.

The previous prime is 551297953. The next prime is 551297987. The reversal of 551297966 is 669792155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56090 + ... + 65181.

It is an arithmetic number, because the mean of its divisors is an integer number (103414698).

Almost surely, 2^551297966 is an apocalyptic number.

551297966 is a deficient number, since it is larger than the sum of its proper divisors (276019618).

551297966 is a wasteful number, since it uses less digits than its factorization.

551297966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123546.

The product of its digits is 1020600, while the sum is 50.

The square root of 551297966 is about 23479.7352199721. The cubic root of 551297966 is about 819.9652801084.

The spelling of 551297966 in words is "five hundred fifty-one million, two hundred ninety-seven thousand, nine hundred sixty-six".