12800591 has 4 divisors (see below), whose sum is σ = 13072992. Its totient is φ = 12528192.

The previous prime is 12800573. The next prime is 12800597. The reversal of 12800591 is 19500821.

It is a happy number.

12800591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19500821 = 19 ⋅1026359.

It is a cyclic number.

It is not a de Polignac number, because 12800591 - 2²² = 8606287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12800591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800597) 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, 136130 + ... + 136223.

It is an arithmetic number, because the mean of its divisors is an integer number (3268248).

Almost surely, 2^12800591 is an apocalyptic number.

12800591 is a deficient number, since it is larger than the sum of its proper divisors (272401).

12800591 is an equidigital number, since it uses as much as digits as its factorization.

12800591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272400.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 12800591 is about 3577.7913578072. The cubic root of 12800591 is about 233.9250191985.

The spelling of 12800591 in words is "twelve million, eight hundred thousand, five hundred ninety-one".