551205552 has 80 divisors (see below), whose sum is σ = 1559766240. Its totient is φ = 166957056.

The previous prime is 551205547. The next prime is 551205607. The reversal of 551205552 is 255502155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12018 + ... + 35310.

It is an arithmetic number, because the mean of its divisors is an integer number (19497078).

Almost surely, 2^551205552 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 551205552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779883120).

551205552 is an abundant number, since it is smaller than the sum of its proper divisors (1008560688).

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

551205552 is a wasteful number, since it uses less digits than its factorization.

551205552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23350 (or 23344 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 551205552 is about 23477.7671851477. The cubic root of 551205552 is about 819.9194606601.

The spelling of 551205552 in words is "five hundred fifty-one million, two hundred five thousand, five hundred fifty-two".