5791421 has 4 divisors (see below), whose sum is σ = 5796252. Its totient is φ = 5786592.

The previous prime is 5791417. The next prime is 5791427. The reversal of 5791421 is 1241975.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5707321 + 84100 = 2389^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 5791421 - 2² = 5791417 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 (5791427) 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, 905 + ... + 3521.

It is an arithmetic number, because the mean of its divisors is an integer number (1449063).

Almost surely, 2^5791421 is an apocalyptic number.

It is an amenable number.

5791421 is a deficient number, since it is larger than the sum of its proper divisors (4831).

5791421 is a wasteful number, since it uses less digits than its factorization.

5791421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830.

The product of its digits is 2520, while the sum is 29.

The square root of 5791421 is about 2406.5371387120. The cubic root of 5791421 is about 179.5815485432.

The spelling of 5791421 in words is "five million, seven hundred ninety-one thousand, four hundred twenty-one".