50866421 has 4 divisors (see below), whose sum is σ = 51267072. Its totient is φ = 50465772.

The previous prime is 50866411. The next prime is 50866423. The reversal of 50866421 is 12466805.

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 50866421 - 2⁶ = 50866357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50866423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200135 + ... + 200388.

It is an arithmetic number, because the mean of its divisors is an integer number (12816768).

Almost surely, 2^50866421 is an apocalyptic number.

It is an amenable number.

50866421 is a deficient number, since it is larger than the sum of its proper divisors (400651).

50866421 is a wasteful number, since it uses less digits than its factorization.

50866421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400650.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 50866421 is about 7132.0698958998. The cubic root of 50866421 is about 370.5189236851.

The spelling of 50866421 in words is "fifty million, eight hundred sixty-six thousand, four hundred twenty-one".