5321639 has 2 divisors, whose sum is σ = 5321640. Its totient is φ = 5321638.

The previous prime is 5321633. The next prime is 5321647. The reversal of 5321639 is 9361235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5321639 - 2⁸ = 5321383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5321633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660819 + 2660820.

It is an arithmetic number, because the mean of its divisors is an integer number (2660820).

Almost surely, 2^5321639 is an apocalyptic number.

5321639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5321639 is an equidigital number, since it uses as much as digits as its factorization.

5321639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 5321639 is about 2306.8677898831. The cubic root of 5321639 is about 174.5883002342.

The spelling of 5321639 in words is "five million, three hundred twenty-one thousand, six hundred thirty-nine".