5255521198 has 4 divisors (see below), whose sum is σ = 7883281800. Its totient is φ = 2627760598.

The previous prime is 5255521177. The next prime is 5255521199. The reversal of 5255521198 is 8911255525.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255521199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313880298 + ... + 1313880301.

It is an arithmetic number, because the mean of its divisors is an integer number (1970820450).

Almost surely, 2^5255521198 is an apocalyptic number.

5255521198 is a deficient number, since it is larger than the sum of its proper divisors (2627760602).

5255521198 is a wasteful number, since it uses less digits than its factorization.

5255521198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627760601.

The product of its digits is 180000, while the sum is 43.

The square root of 5255521198 is about 72494.9736050714. The cubic root of 5255521198 is about 1738.6223734765.

The spelling of 5255521198 in words is "five billion, two hundred fifty-five million, five hundred twenty-one thousand, one hundred ninety-eight".