5204450421 has 16 divisors (see below), whose sum is σ = 7728203520. Its totient is φ = 3461575680.

The previous prime is 5204450413. The next prime is 5204450441. The reversal of 5204450421 is 1240544025.

5204450421 is a `hidden beast` number, since 5 + 204 + 450 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 5204450421 - 2³ = 5204450413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5204450411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211980 + ... + 235253.

It is an arithmetic number, because the mean of its divisors is an integer number (483012720).

Almost surely, 2^5204450421 is an apocalyptic number.

It is an amenable number.

5204450421 is a deficient number, since it is larger than the sum of its proper divisors (2523753099).

5204450421 is a wasteful number, since it uses less digits than its factorization.

5204450421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447673 (or 447667 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 5204450421 is about 72141.8770271470. The cubic root of 5204450421 is about 1732.9723170182.

Adding to 5204450421 its reverse (1240544025), we get a palindrome (6444994446).

It can be divided in two parts, 5204 and 450421, that added together give a square (455625 = 675²).

The spelling of 5204450421 in words is "five billion, two hundred four million, four hundred fifty thousand, four hundred twenty-one".