5421397 has 4 divisors (see below), whose sum is σ = 5547520. Its totient is φ = 5295276.

The previous prime is 5421371. The next prime is 5421407. The reversal of 5421397 is 7931245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5421397 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 (5421337) 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, 62997 + ... + 63082.

It is an arithmetic number, because the mean of its divisors is an integer number (1386880).

Almost surely, 2^5421397 is an apocalyptic number.

It is an amenable number.

5421397 is a deficient number, since it is larger than the sum of its proper divisors (126123).

5421397 is a wasteful number, since it uses less digits than its factorization.

5421397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126122.

The product of its digits is 7560, while the sum is 31.

The square root of 5421397 is about 2328.3893574744. The cubic root of 5421397 is about 175.6724818953.

It can be divided in two parts, 542139 and 7, that multiplied together give a palindrome (3794973).

The spelling of 5421397 in words is "five million, four hundred twenty-one thousand, three hundred ninety-seven".