50999999 has 2 divisors, whose sum is σ = 51000000. Its totient is φ = 50999998.

The previous prime is 50999989. The next prime is 51000041. The reversal of 50999999 is 99999905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50999999 - 2¹⁶ = 50934463 is a prime.

It is a Chen prime.

50999999 is a modest number, since divided by 9999 gives 5099 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50999959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25499999 + 25500000.

It is an arithmetic number, because the mean of its divisors is an integer number (25500000).

Almost surely, 2^50999999 is an apocalyptic number.

50999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

50999999 is an equidigital number, since it uses as much as digits as its factorization.

50999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2657205, while the sum is 59.

The square root of 50999999 is about 7141.4283585288. The cubic root of 50999999 is about 370.8429745028.

The spelling of 50999999 in words is "fifty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".