12491053 has 4 divisors (see below), whose sum is σ = 12508828. Its totient is φ = 12473280.

The previous prime is 12491033. The next prime is 12491069. The reversal of 12491053 is 35019421.

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 11854249 + 636804 = 3443^2 + 798^2 .

It is a cyclic number.

It is not a de Polignac number, because 12491053 - 2¹³ = 12482861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12491023) 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, 7788 + ... + 9253.

It is an arithmetic number, because the mean of its divisors is an integer number (3127207).

Almost surely, 2^12491053 is an apocalyptic number.

It is an amenable number.

12491053 is a deficient number, since it is larger than the sum of its proper divisors (17775).

12491053 is an equidigital number, since it uses as much as digits as its factorization.

12491053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17774.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12491053 is about 3534.2683825652. The cubic root of 12491053 is about 232.0240574042.

The spelling of 12491053 in words is "twelve million, four hundred ninety-one thousand, fifty-three".