551553198 has 16 divisors (see below), whose sum is σ = 1260693120. Its totient is φ = 157586616.

The previous prime is 551553187. The next prime is 551553241. The reversal of 551553198 is 891355155.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 13132219 = 551553198 / (5 + 5 + 1 + 5 + 5 + 3 + 1 + 9 + 8).

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 7 ways as a sum of consecutive naturals, for example, 6566068 + ... + 6566151.

It is an arithmetic number, because the mean of its divisors is an integer number (78793320).

Almost surely, 2^551553198 is an apocalyptic number.

551553198 is an abundant number, since it is smaller than the sum of its proper divisors (709139922).

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

551553198 is a wasteful number, since it uses less digits than its factorization.

551553198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132231.

The product of its digits is 135000, while the sum is 42.

The square root of 551553198 is about 23485.1697460333. The cubic root of 551553198 is about 820.0917991615.

The spelling of 551553198 in words is "five hundred fifty-one million, five hundred fifty-three thousand, one hundred ninety-eight".