26248997 has 4 divisors (see below), whose sum is σ = 26358156. Its totient is φ = 26139840.

The previous prime is 26248993. The next prime is 26249009. The reversal of 26248997 is 79984262.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23338561 + 2910436 = 4831^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 26248997 - 2² = 26248993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26248993) 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, 54218 + ... + 54699.

It is an arithmetic number, because the mean of its divisors is an integer number (6589539).

Almost surely, 2^26248997 is an apocalyptic number.

It is an amenable number.

26248997 is a deficient number, since it is larger than the sum of its proper divisors (109159).

26248997 is a wasteful number, since it uses less digits than its factorization.

26248997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109158.

The product of its digits is 435456, while the sum is 47.

The square root of 26248997 is about 5123.3774992675. The cubic root of 26248997 is about 297.1923123495.

The spelling of 26248997 in words is "twenty-six million, two hundred forty-eight thousand, nine hundred ninety-seven".