50199557 has 2 divisors, whose sum is σ = 50199558. Its totient is φ = 50199556.

The previous prime is 50199517. The next prime is 50199559. The reversal of 50199557 is 75599105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 7806436 = 6511^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 50199557 - 2⁸ = 50199301 is a prime.

Together with 50199559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50199559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25099778 + 25099779.

It is an arithmetic number, because the mean of its divisors is an integer number (25099779).

Almost surely, 2^50199557 is an apocalyptic number.

It is an amenable number.

50199557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50199557 is an equidigital number, since it uses as much as digits as its factorization.

50199557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70875, while the sum is 41.

The square root of 50199557 is about 7085.1645711303. The cubic root of 50199557 is about 368.8926154477.

The spelling of 50199557 in words is "fifty million, one hundred ninety-nine thousand, five hundred fifty-seven".