51363161 has 2 divisors, whose sum is σ = 51363162. Its totient is φ = 51363160.

The previous prime is 51363127. The next prime is 51363173. The reversal of 51363161 is 16136315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49970761 + 1392400 = 7069^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 51363161 - 2²² = 47168857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51363161.

It is not a weakly prime, because it can be changed into another prime (51363101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25681580 + 25681581.

It is an arithmetic number, because the mean of its divisors is an integer number (25681581).

Almost surely, 2^51363161 is an apocalyptic number.

It is an amenable number.

51363161 is a deficient number, since it is larger than the sum of its proper divisors (1).

51363161 is an equidigital number, since it uses as much as digits as its factorization.

51363161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 51363161 is about 7166.8096807436. The cubic root of 51363161 is about 371.7211292047.

Adding to 51363161 its reverse (16136315), we get a palindrome (67499476).

The spelling of 51363161 in words is "fifty-one million, three hundred sixty-three thousand, one hundred sixty-one".