50440421 has 4 divisors (see below), whose sum is σ = 53095200. Its totient is φ = 47785644.

The previous prime is 50440409. The next prime is 50440451. The reversal of 50440421 is 12404405.

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 50440421 - 2¹⁴ = 50424037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50440393 and 50440402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50440451) 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, 1327361 + ... + 1327398.

It is an arithmetic number, because the mean of its divisors is an integer number (13273800).

Almost surely, 2^50440421 is an apocalyptic number.

It is an amenable number.

50440421 is a deficient number, since it is larger than the sum of its proper divisors (2654779).

50440421 is a wasteful number, since it uses less digits than its factorization.

50440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654778.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 50440421 is about 7102.1420008333. The cubic root of 50440421 is about 369.4816725663.

Adding to 50440421 its reverse (12404405), we get a palindrome (62844826).

The spelling of 50440421 in words is "fifty million, four hundred forty thousand, four hundred twenty-one".