5239621 has 4 divisors (see below), whose sum is σ = 5547852. Its totient is φ = 4931392.

The previous prime is 5239603. The next prime is 5239627. The reversal of 5239621 is 1269325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4060225 + 1179396 = 2015^2 + 1086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5239621 is a prime.

It is a Duffinian number.

5239621 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5239621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5239627) 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, 154090 + ... + 154123.

It is an arithmetic number, because the mean of its divisors is an integer number (1386963).

Almost surely, 2^5239621 is an apocalyptic number.

It is an amenable number.

5239621 is a deficient number, since it is larger than the sum of its proper divisors (308231).

5239621 is a wasteful number, since it uses less digits than its factorization.

5239621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308230.

The product of its digits is 3240, while the sum is 28.

The square root of 5239621 is about 2289.0218434956. The cubic root of 5239621 is about 173.6867243671.

The spelling of 5239621 in words is "five million, two hundred thirty-nine thousand, six hundred twenty-one".