50491817 has 4 divisors (see below), whose sum is σ = 50580816. Its totient is φ = 50402820.

The previous prime is 50491801. The next prime is 50491829. The reversal of 50491817 is 71819405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50491817 - 2⁴ = 50491801 is a prime.

It is a super-2 number, since 2×50491817² = 5098847167922978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50491867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43643 + ... + 44784.

It is an arithmetic number, because the mean of its divisors is an integer number (12645204).

Almost surely, 2^50491817 is an apocalyptic number.

It is an amenable number.

50491817 is a deficient number, since it is larger than the sum of its proper divisors (88999).

50491817 is an equidigital number, since it uses as much as digits as its factorization.

50491817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88998.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 50491817 is about 7105.7594245795. The cubic root of 50491817 is about 369.6071237648.

The spelling of 50491817 in words is "fifty million, four hundred ninety-one thousand, eight hundred seventeen".