12054491 has 4 divisors (see below), whose sum is σ = 12334872. Its totient is φ = 11774112.

The previous prime is 12054487. The next prime is 12054499. The reversal of 12054491 is 19445021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19445021 = 823 ⋅23627.

It is a cyclic number.

It is not a de Polignac number, because 12054491 - 2² = 12054487 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 12054491.

It is not an unprimeable number, because it can be changed into a prime (12054499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140126 + ... + 140211.

It is an arithmetic number, because the mean of its divisors is an integer number (3083718).

Almost surely, 2^12054491 is an apocalyptic number.

12054491 is a deficient number, since it is larger than the sum of its proper divisors (280381).

12054491 is an equidigital number, since it uses as much as digits as its factorization.

12054491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280380.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12054491 is about 3471.9578050431. The cubic root of 12054491 is about 229.2888620972.

The spelling of 12054491 in words is "twelve million, fifty-four thousand, four hundred ninety-one".