5256815198 has 16 divisors (see below), whose sum is σ = 7975687680. Its totient is φ = 2598356376.

The previous prime is 5256815183. The next prime is 5256815203. The reversal of 5256815198 is 8915186525.

It is a happy 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, 76865 + ... + 128147.

It is an arithmetic number, because the mean of its divisors is an integer number (498480480).

Almost surely, 2^5256815198 is an apocalyptic number.

5256815198 is a deficient number, since it is larger than the sum of its proper divisors (2718872482).

5256815198 is a wasteful number, since it uses less digits than its factorization.

5256815198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51871.

The product of its digits is 864000, while the sum is 50.

The square root of 5256815198 is about 72503.8978124625. The cubic root of 5256815198 is about 1738.7650547094.

The spelling of 5256815198 in words is "five billion, two hundred fifty-six million, eight hundred fifteen thousand, one hundred ninety-eight".