51245299 has 16 divisors (see below), whose sum is σ = 61895680. Its totient is φ = 41446080.

The previous prime is 51245273. The next prime is 51245309. The reversal of 51245299 is 99254215.

It is a cyclic number.

It is not a de Polignac number, because 51245299 - 2¹⁷ = 51114227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51245209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41014 + ... + 42244.

It is an arithmetic number, because the mean of its divisors is an integer number (3868480).

Almost surely, 2^51245299 is an apocalyptic number.

51245299 is a deficient number, since it is larger than the sum of its proper divisors (10650381).

51245299 is a wasteful number, since it uses less digits than its factorization.

51245299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its digits is 32400, while the sum is 37.

The square root of 51245299 is about 7158.5821920266. The cubic root of 51245299 is about 371.4365844777.

It can be divided in two parts, 51 and 245299, that added together give a triangular number (245350 = T₇₀₀).

The spelling of 51245299 in words is "fifty-one million, two hundred forty-five thousand, two hundred ninety-nine".