50188865 has 4 divisors (see below), whose sum is σ = 60226644. Its totient is φ = 40151088.

The previous prime is 50188813. The next prime is 50188871. The reversal of 50188865 is 56888105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56888105 = 5 ⋅11377621.

It can be written as a sum of positive squares in 2 ways, for example, as 27081616 + 23107249 = 5204^2 + 4807^2 .

It is a cyclic number.

It is not a de Polignac number, because 50188865 - 2²² = 45994561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5018882 + ... + 5018891.

It is an arithmetic number, because the mean of its divisors is an integer number (15056661).

Almost surely, 2^50188865 is an apocalyptic number.

It is an amenable number.

50188865 is a deficient number, since it is larger than the sum of its proper divisors (10037779).

50188865 is a wasteful number, since it uses less digits than its factorization.

50188865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10037778.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 50188865 is about 7084.4099966052. The cubic root of 50188865 is about 368.8664234510.

The spelling of 50188865 in words is "fifty million, one hundred eighty-eight thousand, eight hundred sixty-five".