26512531 has 2 divisors, whose sum is σ = 26512532. Its totient is φ = 26512530.

The previous prime is 26512529. The next prime is 26512547. The reversal of 26512531 is 13521562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26512531 - 2¹ = 26512529 is a prime.

It is a super-2 number, since 2×26512531² = 1405828600051922, which contains 22 as substring.

Together with 26512529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 26512496 and 26512505.

It is not a weakly prime, because it can be changed into another prime (26542531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13256265 + 13256266.

It is an arithmetic number, because the mean of its divisors is an integer number (13256266).

Almost surely, 2^26512531 is an apocalyptic number.

26512531 is a deficient number, since it is larger than the sum of its proper divisors (1).

26512531 is an equidigital number, since it uses as much as digits as its factorization.

26512531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 26512531 is about 5149.0320449576. The cubic root of 26512531 is about 298.1835835600.

The spelling of 26512531 in words is "twenty-six million, five hundred twelve thousand, five hundred thirty-one".