26530155 has 24 divisors (see below), whose sum is σ = 47986848. Its totient is φ = 13533696.

The previous prime is 26530129. The next prime is 26530159. The reversal of 26530155 is 55103562.

26530155 is a `hidden beast` number, since 2 + 653 + 0 + 1 + 5 + 5 = 666.

It is not a de Polignac number, because 26530155 - 2⁵ = 26530123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26530159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11782 + ... + 13851.

It is an arithmetic number, because the mean of its divisors is an integer number (1999452).

Almost surely, 2^26530155 is an apocalyptic number.

26530155 is a deficient number, since it is larger than the sum of its proper divisors (21456693).

26530155 is a wasteful number, since it uses less digits than its factorization.

26530155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25667 (or 25664 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 26530155 is about 5150.7431502648. The cubic root of 26530155 is about 298.2496406691.

It can be divided in two parts, 265301 and 55, that added together give a triangular number (265356 = T₇₂₈).

The spelling of 26530155 in words is "twenty-six million, five hundred thirty thousand, one hundred fifty-five".