50146921 has 4 divisors (see below), whose sum is σ = 54705744. Its totient is φ = 45588100.

The previous prime is 50146919. The next prime is 50146937. The reversal of 50146921 is 12964105.

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 50146921 - 2¹ = 50146919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50146921.

It is not an unprimeable number, because it can be changed into a prime (50146981) 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, 2279395 + ... + 2279416.

It is an arithmetic number, because the mean of its divisors is an integer number (13676436).

Almost surely, 2^50146921 is an apocalyptic number.

It is an amenable number.

50146921 is a deficient number, since it is larger than the sum of its proper divisors (4558823).

50146921 is a wasteful number, since it uses less digits than its factorization.

50146921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558822.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 50146921 is about 7081.4490748716. The cubic root of 50146921 is about 368.7636380669.

It can be divided in two parts, 5014 and 6921, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 50146921 in words is "fifty million, one hundred forty-six thousand, nine hundred twenty-one".