5291639 has 2 divisors, whose sum is σ = 5291640. Its totient is φ = 5291638.

The previous prime is 5291621. The next prime is 5291647. The reversal of 5291639 is 9361925.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5291639 - 2⁸ = 5291383 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5291599 and 5291608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5291939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645819 + 2645820.

It is an arithmetic number, because the mean of its divisors is an integer number (2645820).

Almost surely, 2^5291639 is an apocalyptic number.

5291639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5291639 is an equidigital number, since it uses as much as digits as its factorization.

5291639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 35.

The square root of 5291639 is about 2300.3562767537. The cubic root of 5291639 is about 174.2596093853.

The spelling of 5291639 in words is "five million, two hundred ninety-one thousand, six hundred thirty-nine".