50879509 has 2 divisors, whose sum is σ = 50879510. Its totient is φ = 50879508.

The previous prime is 50879503. The next prime is 50879513. The reversal of 50879509 is 90597805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25979409 + 24900100 = 5097^2 + 4990^2 .

It is a cyclic number.

It is not a de Polignac number, because 50879509 - 2³ = 50879501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50879501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25439754 + 25439755.

It is an arithmetic number, because the mean of its divisors is an integer number (25439755).

Almost surely, 2^50879509 is an apocalyptic number.

It is an amenable number.

50879509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50879509 is an equidigital number, since it uses as much as digits as its factorization.

50879509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 50879509 is about 7132.9873825768. The cubic root of 50879509 is about 370.5506993026.

The spelling of 50879509 in words is "fifty million, eight hundred seventy-nine thousand, five hundred nine".