50878199 has 4 divisors (see below), whose sum is σ = 50895120. Its totient is φ = 50861280.

The previous prime is 50878187. The next prime is 50878211. The reversal of 50878199 is 99187805.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (50878187) and next prime (50878211).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50878199 is a prime.

It is a super-2 number, since 2×50878199² = 5177182266967202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50878169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (12723780).

Almost surely, 2^50878199 is an apocalyptic number.

50878199 is a deficient number, since it is larger than the sum of its proper divisors (16921).

50878199 is a wasteful number, since it uses less digits than its factorization.

50878199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 50878199 is about 7132.8955551024. The cubic root of 50878199 is about 370.5475190729.

The spelling of 50878199 in words is "fifty million, eight hundred seventy-eight thousand, one hundred ninety-nine".