26121097 has 4 divisors (see below), whose sum is σ = 26272260. Its totient is φ = 25969936.

The previous prime is 26121091. The next prime is 26121107. The reversal of 26121097 is 79012162.

It is a happy number.

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 18481401 + 7639696 = 4299^2 + 2764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26121097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26121091) 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, 75322 + ... + 75667.

It is an arithmetic number, because the mean of its divisors is an integer number (6568065).

Almost surely, 2^26121097 is an apocalyptic number.

It is an amenable number.

26121097 is a deficient number, since it is larger than the sum of its proper divisors (151163).

26121097 is a wasteful number, since it uses less digits than its factorization.

26121097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151162.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 26121097 is about 5110.8802568638. The cubic root of 26121097 is about 296.7088297324.

The spelling of 26121097 in words is "twenty-six million, one hundred twenty-one thousand, ninety-seven".