50455421 has 4 divisors (see below), whose sum is σ = 50473500. Its totient is φ = 50437344.

The previous prime is 50455409. The next prime is 50455429. The reversal of 50455421 is 12455405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12455405 = 5 ⋅2491081.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 47265625 = 1786^2 + 6875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50455421 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 (50455429) 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, 3866 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (12618375).

Almost surely, 2^50455421 is an apocalyptic number.

It is an amenable number.

50455421 is a deficient number, since it is larger than the sum of its proper divisors (18079).

50455421 is a wasteful number, since it uses less digits than its factorization.

50455421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18078.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 50455421 is about 7103.1979417724. The cubic root of 50455421 is about 369.5182944903.

The spelling of 50455421 in words is "fifty million, four hundred fifty-five thousand, four hundred twenty-one".