26100491 has 4 divisors (see below), whose sum is σ = 27635832. Its totient is φ = 24565152.

The previous prime is 26100449. The next prime is 26100499. The reversal of 26100491 is 19400162.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26100491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26100499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767645 + ... + 767678.

It is an arithmetic number, because the mean of its divisors is an integer number (6908958).

Almost surely, 2^26100491 is an apocalyptic number.

26100491 is a deficient number, since it is larger than the sum of its proper divisors (1535341).

26100491 is a wasteful number, since it uses less digits than its factorization.

26100491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535340.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 26100491 is about 5108.8639637399. The cubic root of 26100491 is about 296.6307882097.

The spelling of 26100491 in words is "twenty-six million, one hundred thousand, four hundred ninety-one".