51299263 has 2 divisors, whose sum is σ = 51299264. Its totient is φ = 51299262.

The previous prime is 51299257. The next prime is 51299267. The reversal of 51299263 is 36299215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51299263 is a prime.

It is a super-2 number, since 2×51299263² = 5263228768686338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51299267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25649631 + 25649632.

It is an arithmetic number, because the mean of its divisors is an integer number (25649632).

Almost surely, 2^51299263 is an apocalyptic number.

51299263 is a deficient number, since it is larger than the sum of its proper divisors (1).

51299263 is an equidigital number, since it uses as much as digits as its factorization.

51299263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 51299263 is about 7162.3503823815. The cubic root of 51299263 is about 371.5669195035.

The spelling of 51299263 in words is "fifty-one million, two hundred ninety-nine thousand, two hundred sixty-three".