51163397 has 2 divisors, whose sum is σ = 51163398. Its totient is φ = 51163396.

The previous prime is 51163379. The next prime is 51163403. The reversal of 51163397 is 79336115.

Together with previous prime (51163379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 2735716 = 6959^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 51163397 - 2¹⁴ = 51147013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51163327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25581698 + 25581699.

It is an arithmetic number, because the mean of its divisors is an integer number (25581699).

Almost surely, 2^51163397 is an apocalyptic number.

It is an amenable number.

51163397 is a deficient number, since it is larger than the sum of its proper divisors (1).

51163397 is an equidigital number, since it uses as much as digits as its factorization.

51163397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 35.

The square root of 51163397 is about 7152.8593583266. The cubic root of 51163397 is about 371.2385980544.

The spelling of 51163397 in words is "fifty-one million, one hundred sixty-three thousand, three hundred ninety-seven".