26487155 has 4 divisors (see below), whose sum is σ = 31784592. Its totient is φ = 21189720.

The previous prime is 26487151. The next prime is 26487161. The reversal of 26487155 is 55178462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55178462 = 2 ⋅27589231.

It is not a de Polignac number, because 26487155 - 2² = 26487151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26487151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648711 + ... + 2648720.

It is an arithmetic number, because the mean of its divisors is an integer number (7946148).

Almost surely, 2^26487155 is an apocalyptic number.

26487155 is a deficient number, since it is larger than the sum of its proper divisors (5297437).

26487155 is an equidigital number, since it uses as much as digits as its factorization.

26487155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297436.

The product of its digits is 67200, while the sum is 38.

The square root of 26487155 is about 5146.5673025814. The cubic root of 26487155 is about 298.0884194782.

The spelling of 26487155 in words is "twenty-six million, four hundred eighty-seven thousand, one hundred fifty-five".