50821459 has 4 divisors (see below), whose sum is σ = 54730816. Its totient is φ = 46912104.

The previous prime is 50821457. The next prime is 50821487. The reversal of 50821459 is 95412805.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95412805 = 5 ⋅19082561.

It is a cyclic number.

It is not a de Polignac number, because 50821459 - 2¹ = 50821457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50821451) 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, 1954659 + ... + 1954684.

It is an arithmetic number, because the mean of its divisors is an integer number (13682704).

Almost surely, 2^50821459 is an apocalyptic number.

50821459 is a deficient number, since it is larger than the sum of its proper divisors (3909357).

50821459 is a wasteful number, since it uses less digits than its factorization.

50821459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909356.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 50821459 is about 7128.9170986904. The cubic root of 50821459 is about 370.4097214358.

The spelling of 50821459 in words is "fifty million, eight hundred twenty-one thousand, four hundred fifty-nine".