50686213 has 2 divisors, whose sum is σ = 50686214. Its totient is φ = 50686212.

The previous prime is 50686201. The next prime is 50686241. The reversal of 50686213 is 31268605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 12271009 = 6198^2 + 3503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50686213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50686253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25343106 + 25343107.

It is an arithmetic number, because the mean of its divisors is an integer number (25343107).

Almost surely, 2^50686213 is an apocalyptic number.

It is an amenable number.

50686213 is a deficient number, since it is larger than the sum of its proper divisors (1).

50686213 is an equidigital number, since it uses as much as digits as its factorization.

50686213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 50686213 is about 7119.4250470105. The cubic root of 50686213 is about 370.0808515788.

The spelling of 50686213 in words is "fifty million, six hundred eighty-six thousand, two hundred thirteen".