5272639 has 4 divisors (see below), whose sum is σ = 5322024. Its totient is φ = 5223256.

The previous prime is 5272637. The next prime is 5272643. The reversal of 5272639 is 9362725.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5272639 - 2¹ = 5272637 is a prime.

It is a Duffinian number.

5272639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5272637) 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, 24532 + ... + 24745.

It is an arithmetic number, because the mean of its divisors is an integer number (1330506).

Almost surely, 2^5272639 is an apocalyptic number.

5272639 is a deficient number, since it is larger than the sum of its proper divisors (49385).

5272639 is a wasteful number, since it uses less digits than its factorization.

5272639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49384.

The product of its digits is 22680, while the sum is 34.

The square root of 5272639 is about 2296.2227679387. Note that the first 3 decimals coincide. The cubic root of 5272639 is about 174.0507954927.

The spelling of 5272639 in words is "five million, two hundred seventy-two thousand, six hundred thirty-nine".