26540531 has 2 divisors, whose sum is σ = 26540532. Its totient is φ = 26540530.

The previous prime is 26540513. The next prime is 26540533. The reversal of 26540531 is 13504562.

Together with previous prime (26540513) 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 26540531 - 2¹⁰ = 26539507 is a prime.

It is a super-2 number, since 2×26540531² = 1408799571523922, which contains 22 as substring.

Together with 26540533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26540531.

It is not a weakly prime, because it can be changed into another prime (26540533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13270265 + 13270266.

It is an arithmetic number, because the mean of its divisors is an integer number (13270266).

Almost surely, 2^26540531 is an apocalyptic number.

26540531 is a deficient number, since it is larger than the sum of its proper divisors (1).

26540531 is an equidigital number, since it uses as much as digits as its factorization.

26540531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 26540531 is about 5151.7502850973. The cubic root of 26540531 is about 298.2885176241.

The spelling of 26540531 in words is "twenty-six million, five hundred forty thousand, five hundred thirty-one".