551923968 has 72 divisors (see below), whose sum is σ = 1508700928. Its totient is φ = 178993152.

The previous prime is 551923949. The next prime is 551924003. The reversal of 551923968 is 869329155.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 18705 + ... + 38127.

Almost surely, 2^551923968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551923968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754350464).

551923968 is an abundant number, since it is smaller than the sum of its proper divisors (956776960).

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

551923968 is a wasteful number, since it uses less digits than its factorization.

551923968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19479 (or 19465 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 551923968 is about 23493.0621248061. The cubic root of 551923968 is about 820.2755211361.

The spelling of 551923968 in words is "five hundred fifty-one million, nine hundred twenty-three thousand, nine hundred sixty-eight".