50699813 has 2 divisors, whose sum is σ = 50699814. Its totient is φ = 50699812.

The previous prime is 50699717. The next prime is 50699819. The reversal of 50699813 is 31899605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44930209 + 5769604 = 6703^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 50699813 - 2⁸ = 50699557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50699819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25349906 + 25349907.

It is an arithmetic number, because the mean of its divisors is an integer number (25349907).

Almost surely, 2^50699813 is an apocalyptic number.

It is an amenable number.

50699813 is a deficient number, since it is larger than the sum of its proper divisors (1).

50699813 is an equidigital number, since it uses as much as digits as its factorization.

50699813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 50699813 is about 7120.3801162578. The cubic root of 50699813 is about 370.1139483468.

The spelling of 50699813 in words is "fifty million, six hundred ninety-nine thousand, eight hundred thirteen".