51057269 has 2 divisors, whose sum is σ = 51057270. Its totient is φ = 51057268.

The previous prime is 51057257. The next prime is 51057287. The reversal of 51057269 is 96275015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47679025 + 3378244 = 6905^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 51057269 - 2²⁴ = 34280053 is a prime.

It is a super-2 number, since 2×51057269² = 5213689435476722, 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 (51057229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25528634 + 25528635.

It is an arithmetic number, because the mean of its divisors is an integer number (25528635).

Almost surely, 2^51057269 is an apocalyptic number.

It is an amenable number.

51057269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51057269 is an equidigital number, since it uses as much as digits as its factorization.

51057269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 51057269 is about 7145.4369355554. The cubic root of 51057269 is about 370.9817341942.

The spelling of 51057269 in words is "fifty-one million, fifty-seven thousand, two hundred sixty-nine".