26420155 has 4 divisors (see below), whose sum is σ = 31704192. Its totient is φ = 21136120.

The previous prime is 26420143. The next prime is 26420161. The reversal of 26420155 is 55102462.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26420155 - 2⁹ = 26419643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642011 + ... + 2642020.

It is an arithmetic number, because the mean of its divisors is an integer number (7926048).

Almost surely, 2^26420155 is an apocalyptic number.

26420155 is a deficient number, since it is larger than the sum of its proper divisors (5284037).

26420155 is an equidigital number, since it uses as much as digits as its factorization.

26420155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284036.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 26420155 is about 5140.0539880433. The cubic root of 26420155 is about 297.8368662547.

The spelling of 26420155 in words is "twenty-six million, four hundred twenty thousand, one hundred fifty-five".