50537309 has 2 divisors, whose sum is σ = 50537310. Its totient is φ = 50537308.

The previous prime is 50537281. The next prime is 50537351. The reversal of 50537309 is 90373505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36120100 + 14417209 = 6010^2 + 3797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50537309 is a prime.

It is a super-2 number, since 2×50537309² = 5108039201922962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50537909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25268654 + 25268655.

It is an arithmetic number, because the mean of its divisors is an integer number (25268655).

Almost surely, 2^50537309 is an apocalyptic number.

It is an amenable number.

50537309 is a deficient number, since it is larger than the sum of its proper divisors (1).

50537309 is an equidigital number, since it uses as much as digits as its factorization.

50537309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 32.

The square root of 50537309 is about 7108.9597691927. The cubic root of 50537309 is about 369.7180930338.

The spelling of 50537309 in words is "fifty million, five hundred thirty-seven thousand, three hundred nine".