50509969 has 2 divisors, whose sum is σ = 50509970. Its totient is φ = 50509968.

The previous prime is 50509933. The next prime is 50510011. The reversal of 50509969 is 96990505.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36723600 + 13786369 = 6060^2 + 3713^2 .

It is a cyclic number.

It is not a de Polignac number, because 50509969 - 2¹⁷ = 50378897 is a prime.

It is a super-2 number, since 2×50509969² = 5102513936761922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50509919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25254984 + 25254985.

It is an arithmetic number, because the mean of its divisors is an integer number (25254985).

Almost surely, 2^50509969 is an apocalyptic number.

It is an amenable number.

50509969 is a deficient number, since it is larger than the sum of its proper divisors (1).

50509969 is an equidigital number, since it uses as much as digits as its factorization.

50509969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 50509969 is about 7107.0365835558. The cubic root of 50509969 is about 369.6514101798.

The spelling of 50509969 in words is "fifty million, five hundred nine thousand, nine hundred sixty-nine".