5151551251 has 24 divisors (see below), whose sum is σ = 6552799344. Its totient is φ = 4004743680.

The previous prime is 5151551239. The next prime is 5151551257. The reversal of 5151551251 is 1521551515.

It is a happy number.

It is not a de Polignac number, because 5151551251 - 2⁵ = 5151551219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5151551257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222351 + ... + 244423.

It is an arithmetic number, because the mean of its divisors is an integer number (273033306).

Almost surely, 2^5151551251 is an apocalyptic number.

5151551251 is a deficient number, since it is larger than the sum of its proper divisors (1401248093).

5151551251 is a wasteful number, since it uses less digits than its factorization.

5151551251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22531 (or 22524 counting only the distinct ones).

The product of its digits is 6250, while the sum is 31.

The square root of 5151551251 is about 71774.3077361252. The cubic root of 5151551251 is about 1727.0808747780.

The spelling of 5151551251 in words is "five billion, one hundred fifty-one million, five hundred fifty-one thousand, two hundred fifty-one".