5391421 has 12 divisors (see below), whose sum is σ = 6602880. Its totient is φ = 4377240.

The previous prime is 5391413. The next prime is 5391437. The reversal of 5391421 is 1241935.

5391421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5391421 - 2³ = 5391413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5391401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1965 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (550240).

Almost surely, 2^5391421 is an apocalyptic number.

It is an amenable number.

5391421 is a deficient number, since it is larger than the sum of its proper divisors (1211459).

5391421 is a wasteful number, since it uses less digits than its factorization.

5391421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824 (or 5817 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 5391421 is about 2321.9433670958. The cubic root of 5391421 is about 175.3481070920.

It can be divided in two parts, 53914 and 21, that added together give a palindrome (53935).

The spelling of 5391421 in words is "five million, three hundred ninety-one thousand, four hundred twenty-one".