26155331 has 2 divisors, whose sum is σ = 26155332. Its totient is φ = 26155330.

The previous prime is 26155321. The next prime is 26155357. The reversal of 26155331 is 13355162.

It is an a-pointer prime, because the next prime (26155357) can be obtained adding 26155331 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26155331 is a prime.

It is a super-2 number, since 2×26155331² = 1368202679439122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26155331.

It is not a weakly prime, because it can be changed into another prime (26155321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13077665 + 13077666.

It is an arithmetic number, because the mean of its divisors is an integer number (13077666).

Almost surely, 2^26155331 is an apocalyptic number.

26155331 is a deficient number, since it is larger than the sum of its proper divisors (1).

26155331 is an equidigital number, since it uses as much as digits as its factorization.

26155331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 26155331 is about 5114.2282897814. The cubic root of 26155331 is about 296.8383941717.

The spelling of 26155331 in words is "twenty-six million, one hundred fifty-five thousand, three hundred thirty-one".