50878811 has 4 divisors (see below), whose sum is σ = 52253952. Its totient is φ = 49503672.

The previous prime is 50878801. The next prime is 50878871. The reversal of 50878811 is 11887805.

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

It is a cyclic number.

It is not a de Polignac number, because 50878811 - 2⁶ = 50878747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50878801) 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, 687515 + ... + 687588.

It is an arithmetic number, because the mean of its divisors is an integer number (13063488).

Almost surely, 2^50878811 is an apocalyptic number.

50878811 is a deficient number, since it is larger than the sum of its proper divisors (1375141).

50878811 is a wasteful number, since it uses less digits than its factorization.

50878811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375140.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 50878811 is about 7132.9384548025. The cubic root of 50878811 is about 370.5490048054.

The spelling of 50878811 in words is "fifty million, eight hundred seventy-eight thousand, eight hundred eleven".