51500349 has 6 divisors (see below), whose sum is σ = 74389406. Its totient is φ = 34333560.

The previous prime is 51500303. The next prime is 51500357. The reversal of 51500349 is 94300515.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 11088900 = 6357^2 + 3330^2 .

It is not a de Polignac number, because 51500349 - 2⁹ = 51499837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2861122 + ... + 2861139.

Almost surely, 2^51500349 is an apocalyptic number.

It is an amenable number.

51500349 is a deficient number, since it is larger than the sum of its proper divisors (22889057).

51500349 is a wasteful number, since it uses less digits than its factorization.

51500349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722267 (or 5722264 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51500349 is about 7176.3743631447. The cubic root of 51500349 is about 372.0517834607.

The spelling of 51500349 in words is "fifty-one million, five hundred thousand, three hundred forty-nine".