51163517 has 2 divisors, whose sum is σ = 51163518. Its totient is φ = 51163516.

The previous prime is 51163513. The next prime is 51163549. The reversal of 51163517 is 71536115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33304441 + 17859076 = 5771^2 + 4226^2 .

It is a cyclic number.

It is not a de Polignac number, because 51163517 - 2² = 51163513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51163517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51163513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25581758 + 25581759.

It is an arithmetic number, because the mean of its divisors is an integer number (25581759).

Almost surely, 2^51163517 is an apocalyptic number.

It is an amenable number.

51163517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51163517 is an equidigital number, since it uses as much as digits as its factorization.

51163517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 29.

The square root of 51163517 is about 7152.8677465755. The cubic root of 51163517 is about 371.2388882918.

The spelling of 51163517 in words is "fifty-one million, one hundred sixty-three thousand, five hundred seventeen".