50778877 has 2 divisors, whose sum is σ = 50778878. Its totient is φ = 50778876.

The previous prime is 50778863. The next prime is 50778919. The reversal of 50778877 is 77887705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 12574116 = 6181^2 + 3546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50778877 is a prime.

It is a super-2 number, since 2×50778877² = 5156988698762258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50778877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50778817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389438 + 25389439.

It is an arithmetic number, because the mean of its divisors is an integer number (25389439).

Almost surely, 2^50778877 is an apocalyptic number.

It is an amenable number.

50778877 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778877 is an equidigital number, since it uses as much as digits as its factorization.

50778877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768320, while the sum is 49.

The square root of 50778877 is about 7125.9299042300. The cubic root of 50778877 is about 370.3062402533.

The spelling of 50778877 in words is "fifty million, seven hundred seventy-eight thousand, eight hundred seventy-seven".