51245279 has 8 divisors (see below), whose sum is σ = 52384752. Its totient is φ = 50118400.

The previous prime is 51245273. The next prime is 51245309. The reversal of 51245279 is 97254215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51245279 - 2¹⁶ = 51179743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (6548094).

Almost surely, 2^51245279 is an apocalyptic number.

51245279 is a deficient number, since it is larger than the sum of its proper divisors (1139473).

51245279 is a wasteful number, since it uses less digits than its factorization.

51245279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297.

The product of its digits is 25200, while the sum is 35.

The square root of 51245279 is about 7158.5807951018. The cubic root of 51245279 is about 371.4365361563.

The spelling of 51245279 in words is "fifty-one million, two hundred forty-five thousand, two hundred seventy-nine".