50000091 has 8 divisors (see below), whose sum is σ = 69565440. Its totient is φ = 31884072.

The previous prime is 50000063. The next prime is 50000101. The reversal of 50000091 is 19000005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50000091 - 2⁵ = 50000059 is a prime.

50000091 is a modest number, since divided by 91 gives 50 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 50000091.

It is not an unprimeable number, because it can be changed into a prime (50000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362251 + ... + 362388.

It is an arithmetic number, because the mean of its divisors is an integer number (8695680).

Almost surely, 2^50000091 is an apocalyptic number.

50000091 is a deficient number, since it is larger than the sum of its proper divisors (19565349).

50000091 is a wasteful number, since it uses less digits than its factorization.

50000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724665.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 50000091 is about 7071.0742465343. The cubic root of 50000091 is about 368.4033733618.

Adding to 50000091 its reverse (19000005), we get a palindrome (69000096).

The spelling of 50000091 in words is "fifty million, ninety-one", and thus it is an aban number and an uban number.