5161231651 has 2 divisors, whose sum is σ = 5161231652. Its totient is φ = 5161231650.

The previous prime is 5161231601. The next prime is 5161231679. The reversal of 5161231651 is 1561321615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5161231651 is a prime.

It is not a weakly prime, because it can be changed into another prime (5161231601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580615825 + 2580615826.

It is an arithmetic number, because the mean of its divisors is an integer number (2580615826).

Almost surely, 2^5161231651 is an apocalyptic number.

5161231651 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161231651 is an equidigital number, since it uses as much as digits as its factorization.

5161231651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 5161231651 is about 71841.7124726297. The cubic root of 5161231651 is about 1728.1619971788.

The spelling of 5161231651 in words is "five billion, one hundred sixty-one million, two hundred thirty-one thousand, six hundred fifty-one".