26542631 has 2 divisors, whose sum is σ = 26542632. Its totient is φ = 26542630.

The previous prime is 26542613. The next prime is 26542643. The reversal of 26542631 is 13624562.

Together with previous prime (26542613) 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 a de Polignac number, because none of the positive numbers 2^k-26542631 is a prime.

It is a super-2 number, since 2×26542631² = 1409022520804322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26542594 and 26542603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26542651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13271315 + 13271316.

It is an arithmetic number, because the mean of its divisors is an integer number (13271316).

Almost surely, 2^26542631 is an apocalyptic number.

26542631 is a deficient number, since it is larger than the sum of its proper divisors (1).

26542631 is an equidigital number, since it uses as much as digits as its factorization.

26542631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 26542631 is about 5151.9540952924. The cubic root of 26542631 is about 298.2963847031.

The spelling of 26542631 in words is "twenty-six million, five hundred forty-two thousand, six hundred thirty-one".