51358313 has 2 divisors, whose sum is σ = 51358314. Its totient is φ = 51358312.

The previous prime is 51358303. The next prime is 51358327. The reversal of 51358313 is 31385315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43138624 + 8219689 = 6568^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 51358313 - 2¹² = 51354217 is a prime.

It is not a weakly prime, because it can be changed into another prime (51358303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25679156 + 25679157.

It is an arithmetic number, because the mean of its divisors is an integer number (25679157).

Almost surely, 2^51358313 is an apocalyptic number.

It is an amenable number.

51358313 is a deficient number, since it is larger than the sum of its proper divisors (1).

51358313 is an equidigital number, since it uses as much as digits as its factorization.

51358313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 51358313 is about 7166.4714469535. The cubic root of 51358313 is about 371.7094336580.

The spelling of 51358313 in words is "fifty-one million, three hundred fifty-eight thousand, three hundred thirteen".