51382757 has 2 divisors, whose sum is σ = 51382758. Its totient is φ = 51382756.

The previous prime is 51382753. The next prime is 51382763. The reversal of 51382757 is 75728315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38950081 + 12432676 = 6241^2 + 3526^2 .

It is a cyclic number.

It is not a de Polignac number, because 51382757 - 2² = 51382753 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51382757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51382753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25691378 + 25691379.

It is an arithmetic number, because the mean of its divisors is an integer number (25691379).

Almost surely, 2^51382757 is an apocalyptic number.

It is an amenable number.

51382757 is a deficient number, since it is larger than the sum of its proper divisors (1).

51382757 is an equidigital number, since it uses as much as digits as its factorization.

51382757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 51382757 is about 7168.1766858804. The cubic root of 51382757 is about 371.7683960326.

The spelling of 51382757 in words is "fifty-one million, three hundred eighty-two thousand, seven hundred fifty-seven".