26820051 has 4 divisors (see below), whose sum is σ = 35760072. Its totient is φ = 17880032.

The previous prime is 26820019. The next prime is 26820097. The reversal of 26820051 is 15002862.

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

It is a cyclic number.

It is not a de Polignac number, because 26820051 - 2⁵ = 26820019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26820151) 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, 4470006 + ... + 4470011.

It is an arithmetic number, because the mean of its divisors is an integer number (8940018).

Almost surely, 2^26820051 is an apocalyptic number.

26820051 is a deficient number, since it is larger than the sum of its proper divisors (8940021).

26820051 is an equidigital number, since it uses as much as digits as its factorization.

26820051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8940020.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 26820051 is about 5178.8078744051. The cubic root of 26820051 is about 299.3320360733.

The spelling of 26820051 in words is "twenty-six million, eight hundred twenty thousand, fifty-one".