50637421 has 4 divisors (see below), whose sum is σ = 52839072. Its totient is φ = 48435772.

The previous prime is 50637409. The next prime is 50637437. The reversal of 50637421 is 12473605.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12473605 = 5 ⋅2494721.

It is a cyclic number.

It is not a de Polignac number, because 50637421 - 2²³ = 42248813 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 50637421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50637491) 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, 1100791 + ... + 1100836.

It is an arithmetic number, because the mean of its divisors is an integer number (13209768).

Almost surely, 2^50637421 is an apocalyptic number.

It is an amenable number.

50637421 is a deficient number, since it is larger than the sum of its proper divisors (2201651).

50637421 is a wasteful number, since it uses less digits than its factorization.

50637421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201650.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 50637421 is about 7115.9975407528. The cubic root of 50637421 is about 369.9620633128.

The spelling of 50637421 in words is "fifty million, six hundred thirty-seven thousand, four hundred twenty-one".