50091965 has 24 divisors (see below), whose sum is σ = 76285152. Its totient is φ = 31224480.

The previous prime is 50091941. The next prime is 50091967. The reversal of 50091965 is 56919005.

It is not a de Polignac number, because 50091965 - 2⁶ = 50091901 is a prime.

It is a super-2 number, since 2×50091965² = 5018409915122450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50091967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6599 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (3178548).

Almost surely, 2^50091965 is an apocalyptic number.

50091965 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50091965 is a deficient number, since it is larger than the sum of its proper divisors (26193187).

50091965 is a wasteful number, since it uses less digits than its factorization.

50091965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18617 (or 18610 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 50091965 is about 7077.5677319260. The cubic root of 50091965 is about 368.6288794969.

The spelling of 50091965 in words is "fifty million, ninety-one thousand, nine hundred sixty-five".