26272721 has 2 divisors, whose sum is σ = 26272722. Its totient is φ = 26272720.

The previous prime is 26272709. The next prime is 26272733. The reversal of 26272721 is 12727262.

It is a balanced prime because it is at equal distance from previous prime (26272709) and next prime (26272733).

It can be written as a sum of positive squares in only one way, i.e., 21520321 + 4752400 = 4639^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 26272721 - 2¹⁴ = 26256337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26272121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13136360 + 13136361.

It is an arithmetic number, because the mean of its divisors is an integer number (13136361).

Almost surely, 2^26272721 is an apocalyptic number.

It is an amenable number.

26272721 is a deficient number, since it is larger than the sum of its proper divisors (1).

26272721 is an equidigital number, since it uses as much as digits as its factorization.

26272721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 26272721 is about 5125.6922459313. The cubic root of 26272721 is about 297.2818201170.

Adding to 26272721 its reverse (12727262), we get a palindrome (38999983).

The spelling of 26272721 in words is "twenty-six million, two hundred seventy-two thousand, seven hundred twenty-one".