51975877 has 2 divisors, whose sum is σ = 51975878. Its totient is φ = 51975876.

The previous prime is 51975821. The next prime is 51975899. The reversal of 51975877 is 77857915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 1976836 = 7071^2 + 1406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51975877 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 51975877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51975977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25987938 + 25987939.

It is an arithmetic number, because the mean of its divisors is an integer number (25987939).

Almost surely, 2^51975877 is an apocalyptic number.

It is an amenable number.

51975877 is a deficient number, since it is larger than the sum of its proper divisors (1).

51975877 is an equidigital number, since it uses as much as digits as its factorization.

51975877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 49.

The square root of 51975877 is about 7209.4297277940. The cubic root of 51975877 is about 373.1933892116.

The spelling of 51975877 in words is "fifty-one million, nine hundred seventy-five thousand, eight hundred seventy-seven".