51450313 has 16 divisors (see below), whose sum is σ = 56413584. Its totient is φ = 46725120.

The previous prime is 51450299. The next prime is 51450323. The reversal of 51450313 is 31305415.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1281424 + 50168889 = 1132^2 + 7083^2 .

It is a cyclic number.

It is not a de Polignac number, because 51450313 - 2⁵ = 51450281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51450323) 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, 98493 + ... + 99013.

It is an arithmetic number, because the mean of its divisors is an integer number (3525849).

Almost surely, 2^51450313 is an apocalyptic number.

It is an amenable number.

51450313 is a deficient number, since it is larger than the sum of its proper divisors (4963271).

51450313 is a wasteful number, since it uses less digits than its factorization.

51450313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51450313 is about 7172.8873544759. The cubic root of 51450313 is about 371.9312534349.

Adding to 51450313 its reverse (31305415), we get a palindrome (82755728).

The spelling of 51450313 in words is "fifty-one million, four hundred fifty thousand, three hundred thirteen".