5340021 has 4 divisors (see below), whose sum is σ = 7120032. Its totient is φ = 3560012.

The previous prime is 5340017. The next prime is 5340037. The reversal of 5340021 is 1200435.

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 not a de Polignac number, because 5340021 - 2² = 5340017 is a prime.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5340221) 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, 890001 + ... + 890006.

It is an arithmetic number, because the mean of its divisors is an integer number (1780008).

Almost surely, 2^5340021 is an apocalyptic number.

It is an amenable number.

5340021 is a deficient number, since it is larger than the sum of its proper divisors (1780011).

5340021 is a wasteful number, since it uses less digits than its factorization.

5340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780010.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 5340021 is about 2310.8485454482. The cubic root of 5340021 is about 174.7890901314.

Adding to 5340021 its reverse (1200435), we get a palindrome (6540456).

The spelling of 5340021 in words is "five million, three hundred forty thousand, twenty-one".