26531897 has 8 divisors (see below), whose sum is σ = 31368000. Its totient is φ = 21957264.

The previous prime is 26531893. The next prime is 26531899. The reversal of 26531897 is 79813562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26531897 - 2² = 26531893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26531893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65147 + ... + 65552.

It is an arithmetic number, because the mean of its divisors is an integer number (3921000).

Almost surely, 2^26531897 is an apocalyptic number.

It is an amenable number.

26531897 is a deficient number, since it is larger than the sum of its proper divisors (4836103).

26531897 is a wasteful number, since it uses less digits than its factorization.

26531897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130735.

The product of its digits is 90720, while the sum is 41.

The square root of 26531897 is about 5150.9122493011. The cubic root of 26531897 is about 298.2561683292.

The spelling of 26531897 in words is "twenty-six million, five hundred thirty-one thousand, eight hundred ninety-seven".