51413161 has 2 divisors, whose sum is σ = 51413162. Its totient is φ = 51413160.

The previous prime is 51413149. The next prime is 51413191. The reversal of 51413161 is 16131415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38987536 + 12425625 = 6244^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 51413161 - 2⁵ = 51413129 is a prime.

It is not a weakly prime, because it can be changed into another prime (51413111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25706580 + 25706581.

It is an arithmetic number, because the mean of its divisors is an integer number (25706581).

Almost surely, 2^51413161 is an apocalyptic number.

It is an amenable number.

51413161 is a deficient number, since it is larger than the sum of its proper divisors (1).

51413161 is an equidigital number, since it uses as much as digits as its factorization.

51413161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 51413161 is about 7170.2971347079. The cubic root of 51413161 is about 371.8417086785.

Adding to 51413161 its reverse (16131415), we get a palindrome (67544576).

The spelling of 51413161 in words is "fifty-one million, four hundred thirteen thousand, one hundred sixty-one".