26621851 has 2 divisors, whose sum is σ = 26621852. Its totient is φ = 26621850.

The previous prime is 26621843. The next prime is 26621887. The reversal of 26621851 is 15812662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26621851 - 2³ = 26621843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26621801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13310925 + 13310926.

It is an arithmetic number, because the mean of its divisors is an integer number (13310926).

Almost surely, 2^26621851 is an apocalyptic number.

26621851 is a deficient number, since it is larger than the sum of its proper divisors (1).

26621851 is an equidigital number, since it uses as much as digits as its factorization.

26621851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 26621851 is about 5159.6367120176. The cubic root of 26621851 is about 298.5928583083.

It can be divided in two parts, 26621 and 851, that added together give a palindrome (27472).

The spelling of 26621851 in words is "twenty-six million, six hundred twenty-one thousand, eight hundred fifty-one".