26152221 has 16 divisors (see below), whose sum is σ = 35610624. Its totient is φ = 17068464.

The previous prime is 26152199. The next prime is 26152249. The reversal of 26152221 is 12225162.

It is a happy number.

It is not a de Polignac number, because 26152221 - 2⁶ = 26152157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26152121) 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 15 ways as a sum of consecutive naturals, for example, 31210 + ... + 32036.

It is an arithmetic number, because the mean of its divisors is an integer number (2225664).

Almost surely, 2^26152221 is an apocalyptic number.

It is an amenable number.

26152221 is a deficient number, since it is larger than the sum of its proper divisors (9458403).

26152221 is a wasteful number, since it uses less digits than its factorization.

26152221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 480, while the sum is 21.

The square root of 26152221 is about 5113.9242270491. The cubic root of 26152221 is about 296.8266285142.

Adding to 26152221 its reverse (12225162), we get a palindrome (38377383).

The spelling of 26152221 in words is "twenty-six million, one hundred fifty-two thousand, two hundred twenty-one".