51314513 has 2 divisors, whose sum is σ = 51314514. Its totient is φ = 51314512.

The previous prime is 51314507. The next prime is 51314531. The reversal of 51314513 is 31541315.

Together with next prime (51314531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31449664 + 19864849 = 5608^2 + 4457^2 .

It is a cyclic number.

It is not a de Polignac number, because 51314513 - 2²⁴ = 34537297 is a prime.

It is not a weakly prime, because it can be changed into another prime (51314503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25657256 + 25657257.

It is an arithmetic number, because the mean of its divisors is an integer number (25657257).

Almost surely, 2^51314513 is an apocalyptic number.

It is an amenable number.

51314513 is a deficient number, since it is larger than the sum of its proper divisors (1).

51314513 is an equidigital number, since it uses as much as digits as its factorization.

51314513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 23.

The square root of 51314513 is about 7163.4148979380. The cubic root of 51314513 is about 371.6037350689.

Adding to 51314513 its reverse (31541315), we get a palindrome (82855828).

The spelling of 51314513 in words is "fifty-one million, three hundred fourteen thousand, five hundred thirteen".