50345591 has 2 divisors, whose sum is σ = 50345592. Its totient is φ = 50345590.

The previous prime is 50345587. The next prime is 50345599. The reversal of 50345591 is 19554305.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50345591 - 2² = 50345587 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50345599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25172795 + 25172796.

It is an arithmetic number, because the mean of its divisors is an integer number (25172796).

Almost surely, 2^50345591 is an apocalyptic number.

50345591 is a deficient number, since it is larger than the sum of its proper divisors (1).

50345591 is an equidigital number, since it uses as much as digits as its factorization.

50345591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 50345591 is about 7095.4627051377. The cubic root of 50345591 is about 369.2499805564.

Adding to 50345591 its reverse (19554305), we get a palindrome (69899896).

The spelling of 50345591 in words is "fifty million, three hundred forty-five thousand, five hundred ninety-one".