6422531 has 2 divisors, whose sum is σ = 6422532. Its totient is φ = 6422530.

The previous prime is 6422519. The next prime is 6422539. The reversal of 6422531 is 1352246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6422531 - 2¹⁰ = 6421507 is a prime.

It is a super-2 number, since 2×6422531² = 82497808891922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6422497 and 6422506.

It is not a weakly prime, because it can be changed into another prime (6422539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211265 + 3211266.

It is an arithmetic number, because the mean of its divisors is an integer number (3211266).

Almost surely, 2^6422531 is an apocalyptic number.

6422531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6422531 is an equidigital number, since it uses as much as digits as its factorization.

6422531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 6422531 is about 2534.2712956588. The cubic root of 6422531 is about 185.8811724161.

Adding to 6422531 its reverse (1352246), we get a palindrome (7774777).

The spelling of 6422531 in words is "six million, four hundred twenty-two thousand, five hundred thirty-one".