5291621 has 2 divisors, whose sum is σ = 5291622. Its totient is φ = 5291620.

The previous prime is 5291599. The next prime is 5291639. The reversal of 5291621 is 1261925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4368100 + 923521 = 2090^2 + 961^2 .

It is a cyclic number.

It is not a de Polignac number, because 5291621 - 2¹⁸ = 5029477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5291821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645810 + 2645811.

It is an arithmetic number, because the mean of its divisors is an integer number (2645811).

Almost surely, 2^5291621 is an apocalyptic number.

It is an amenable number.

5291621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5291621 is an equidigital number, since it uses as much as digits as its factorization.

5291621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 5291621 is about 2300.3523643129. The cubic root of 5291621 is about 174.2594117984.

The spelling of 5291621 in words is "five million, two hundred ninety-one thousand, six hundred twenty-one".