551678772 has 12 divisors (see below), whose sum is σ = 1287250496. Its totient is φ = 183892920.

The previous prime is 551678767. The next prime is 551678783. The reversal of 551678772 is 277876155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 22986604 + ... + 22986627.

Almost surely, 2^551678772 is an apocalyptic number.

It is an amenable number.

551678772 is an abundant number, since it is smaller than the sum of its proper divisors (735571724).

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

551678772 is a wasteful number, since it uses less digits than its factorization.

551678772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45973238 (or 45973236 counting only the distinct ones).

The product of its digits is 823200, while the sum is 48.

The square root of 551678772 is about 23487.8430682768. The cubic root of 551678772 is about 820.1540321389.

The spelling of 551678772 in words is "five hundred fifty-one million, six hundred seventy-eight thousand, seven hundred seventy-two".