6622531 has 2 divisors, whose sum is σ = 6622532. Its totient is φ = 6622530.

The previous prime is 6622523. The next prime is 6622541. The reversal of 6622531 is 1352266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6622531 - 2³ = 6622523 is a prime.

It is a super-2 number, since 2×6622531² = 87715833691922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6622496 and 6622505.

It is not a weakly prime, because it can be changed into another prime (6622501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311265 + 3311266.

It is an arithmetic number, because the mean of its divisors is an integer number (3311266).

Almost surely, 2^6622531 is an apocalyptic number.

6622531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6622531 is an equidigital number, since it uses as much as digits as its factorization.

6622531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 6622531 is about 2573.4278695934. The cubic root of 6622531 is about 187.7909533164.

Adding to 6622531 its reverse (1352266), we get a palindrome (7974797).

The spelling of 6622531 in words is "six million, six hundred twenty-two thousand, five hundred thirty-one".