51525269 has 2 divisors, whose sum is σ = 51525270. Its totient is φ = 51525268.

The previous prime is 51525247. The next prime is 51525311. The reversal of 51525269 is 96252515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 14922769 = 6050^2 + 3863^2 .

It is a cyclic number.

It is not a de Polignac number, because 51525269 - 2⁸ = 51525013 is a prime.

It is a super-2 number, since 2×51525269² = 5309706691044722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51525209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25762634 + 25762635.

It is an arithmetic number, because the mean of its divisors is an integer number (25762635).

Almost surely, 2^51525269 is an apocalyptic number.

It is an amenable number.

51525269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51525269 is an equidigital number, since it uses as much as digits as its factorization.

51525269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 51525269 is about 7178.1104059495. The cubic root of 51525269 is about 372.1117832833. Note that the first 3 decimals are identical.

The spelling of 51525269 in words is "fifty-one million, five hundred twenty-five thousand, two hundred sixty-nine".