51563269 has 2 divisors, whose sum is σ = 51563270. Its totient is φ = 51563268.

The previous prime is 51563249. The next prime is 51563287. The reversal of 51563269 is 96236515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 1790244 = 7055^2 + 1338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51563269 is a prime.

It is a super-2 number, since 2×51563269² = 5317541419932722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51563249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25781634 + 25781635.

It is an arithmetic number, because the mean of its divisors is an integer number (25781635).

Almost surely, 2^51563269 is an apocalyptic number.

It is an amenable number.

51563269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51563269 is an equidigital number, since it uses as much as digits as its factorization.

51563269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 51563269 is about 7180.7568542599. The cubic root of 51563269 is about 372.2032385589.

The spelling of 51563269 in words is "fifty-one million, five hundred sixty-three thousand, two hundred sixty-nine".