26305497 has 6 divisors (see below), whose sum is σ = 37996842. Its totient is φ = 17536992.

The previous prime is 26305493. The next prime is 26305501. The reversal of 26305497 is 79450362.

It is an interprime number because it is at equal distance from previous prime (26305493) and next prime (26305501).

It can be written as a sum of positive squares in only one way, i.e., 25190361 + 1115136 = 5019^2 + 1056^2 .

It is not a de Polignac number, because 26305497 - 2² = 26305493 is a prime.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (26305493) 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 5 ways as a sum of consecutive naturals, for example, 1461408 + ... + 1461425.

It is an arithmetic number, because the mean of its divisors is an integer number (6332807).

Almost surely, 2^26305497 is an apocalyptic number.

It is an amenable number.

26305497 is a deficient number, since it is larger than the sum of its proper divisors (11691345).

26305497 is a wasteful number, since it uses less digits than its factorization.

26305497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922839 (or 2922836 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 26305497 is about 5128.8884760735. Note that the first 3 decimals coincide. The cubic root of 26305497 is about 297.4053913792.

The spelling of 26305497 in words is "twenty-six million, three hundred five thousand, four hundred ninety-seven".