51492757 has 2 divisors, whose sum is σ = 51492758. Its totient is φ = 51492756.

The previous prime is 51492739. The next prime is 51492773. The reversal of 51492757 is 75729415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28366276 + 23126481 = 5326^2 + 4809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51492757 is a prime.

It is a super-2 number, since 2×51492757² = 5303008046922098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51492737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25746378 + 25746379.

It is an arithmetic number, because the mean of its divisors is an integer number (25746379).

Almost surely, 2^51492757 is an apocalyptic number.

It is an amenable number.

51492757 is a deficient number, since it is larger than the sum of its proper divisors (1).

51492757 is an equidigital number, since it uses as much as digits as its factorization.

51492757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 40.

The square root of 51492757 is about 7175.8453857368. The cubic root of 51492757 is about 372.0335003746.

The spelling of 51492757 in words is "fifty-one million, four hundred ninety-two thousand, seven hundred fifty-seven".