26527561 has 2 divisors, whose sum is σ = 26527562. Its totient is φ = 26527560.

The previous prime is 26527559. The next prime is 26527577. The reversal of 26527561 is 16572562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24950025 + 1577536 = 4995^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 26527561 - 2¹ = 26527559 is a prime.

It is a super-2 number, since 2×26527561² = 1407422985217442, which contains 22 as substring.

Together with 26527559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26528561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13263780 + 13263781.

It is an arithmetic number, because the mean of its divisors is an integer number (13263781).

Almost surely, 2^26527561 is an apocalyptic number.

It is an amenable number.

26527561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26527561 is an equidigital number, since it uses as much as digits as its factorization.

26527561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 26527561 is about 5150.4913357854. The cubic root of 26527561 is about 298.2399198466.

The spelling of 26527561 in words is "twenty-six million, five hundred twenty-seven thousand, five hundred sixty-one".