2644531 has 2 divisors, whose sum is σ = 2644532. Its totient is φ = 2644530.

The previous prime is 2644513. The next prime is 2644547. The reversal of 2644531 is 1354462.

Together with previous prime (2644513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2644531 - 2⁷ = 2644403 is a prime.

It is a super-3 number, since 3×2644531³ = 55483933389337119873, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2644496 and 2644505.

It is not a weakly prime, because it can be changed into another prime (2644561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322265 + 1322266.

It is an arithmetic number, because the mean of its divisors is an integer number (1322266).

2^2644531 is an apocalyptic number.

2644531 is the 1029-th centered pentagonal number.

2644531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644531 is an equidigital number, since it uses as much as digits as its factorization.

2644531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 2644531 is about 1626.2014020410. The cubic root of 2644531 is about 138.2874879127.

Adding to 2644531 its reverse (1354462), we get a palindrome (3998993).

The spelling of 2644531 in words is "two million, six hundred forty-four thousand, five hundred thirty-one".