51255159 has 4 divisors (see below), whose sum is σ = 68340216. Its totient is φ = 34170104.

The previous prime is 51255143. The next prime is 51255161. The reversal of 51255159 is 95155215.

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

It is a cyclic number.

It is not a de Polignac number, because 51255159 - 2⁴ = 51255143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8542524 + ... + 8542529.

It is an arithmetic number, because the mean of its divisors is an integer number (17085054).

Almost surely, 2^51255159 is an apocalyptic number.

51255159 is a deficient number, since it is larger than the sum of its proper divisors (17085057).

51255159 is a wasteful number, since it uses less digits than its factorization.

51255159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17085056.

The product of its digits is 11250, while the sum is 33.

The square root of 51255159 is about 7159.2708427605. The cubic root of 51255159 is about 371.4604053935.

The spelling of 51255159 in words is "fifty-one million, two hundred fifty-five thousand, one hundred fifty-nine".