50621921 has 8 divisors (see below), whose sum is σ = 59265024. Its totient is φ = 42331680.

The previous prime is 50621897. The next prime is 50621939. The reversal of 50621921 is 12912605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50621921 - 2¹⁴ = 50605537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50621951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87905 + ... + 88478.

It is an arithmetic number, because the mean of its divisors is an integer number (7408128).

Almost surely, 2^50621921 is an apocalyptic number.

It is an amenable number.

50621921 is a deficient number, since it is larger than the sum of its proper divisors (8643103).

50621921 is a wasteful number, since it uses less digits than its factorization.

50621921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176431.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 50621921 is about 7114.9083620241. The cubic root of 50621921 is about 369.9243112771.

The spelling of 50621921 in words is "fifty million, six hundred twenty-one thousand, nine hundred twenty-one".