50869921 has 4 divisors (see below), whose sum is σ = 50887872. Its totient is φ = 50851972.

The previous prime is 50869883. The next prime is 50869939. The reversal of 50869921 is 12996805.

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 50869921 - 2²¹ = 48772769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50869961) 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, 3685 + ... + 10738.

It is an arithmetic number, because the mean of its divisors is an integer number (12721968).

Almost surely, 2^50869921 is an apocalyptic number.

It is an amenable number.

50869921 is a deficient number, since it is larger than the sum of its proper divisors (17951).

50869921 is a wasteful number, since it uses less digits than its factorization.

50869921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17950.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 50869921 is about 7132.3152622413. The cubic root of 50869921 is about 370.5274216717.

The spelling of 50869921 in words is "fifty million, eight hundred sixty-nine thousand, nine hundred twenty-one".