51334513 has 2 divisors, whose sum is σ = 51334514. Its totient is φ = 51334512.

The previous prime is 51334499. The next prime is 51334559. The reversal of 51334513 is 31543315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49463089 + 1871424 = 7033^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 51334513 - 2²¹ = 49237361 is a prime.

It is not a weakly prime, because it can be changed into another prime (51334573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25667256 + 25667257.

It is an arithmetic number, because the mean of its divisors is an integer number (25667257).

Almost surely, 2^51334513 is an apocalyptic number.

It is an amenable number.

51334513 is a deficient number, since it is larger than the sum of its proper divisors (1).

51334513 is an equidigital number, since it uses as much as digits as its factorization.

51334513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 51334513 is about 7164.8107441858. The cubic root of 51334513 is about 371.6520067236.

Adding to 51334513 its reverse (31543315), we get a palindrome (82877828).

The spelling of 51334513 in words is "fifty-one million, three hundred thirty-four thousand, five hundred thirteen".