50778113 has 2 divisors, whose sum is σ = 50778114. Its totient is φ = 50778112.

The previous prime is 50778061. The next prime is 50778121. The reversal of 50778113 is 31187705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49392784 + 1385329 = 7028^2 + 1177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50778113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50778113.

It is not a weakly prime, because it can be changed into another prime (50778163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25389056 + 25389057.

It is an arithmetic number, because the mean of its divisors is an integer number (25389057).

Almost surely, 2^50778113 is an apocalyptic number.

It is an amenable number.

50778113 is a deficient number, since it is larger than the sum of its proper divisors (1).

50778113 is an equidigital number, since it uses as much as digits as its factorization.

50778113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 50778113 is about 7125.8762969897. The cubic root of 50778113 is about 370.3043830809.

The spelling of 50778113 in words is "fifty million, seven hundred seventy-eight thousand, one hundred thirteen".