12273545 has 8 divisors (see below), whose sum is σ = 14894280. Its totient is φ = 9708160.

The previous prime is 12273539. The next prime is 12273571. The reversal of 12273545 is 54537221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3013696 + 9259849 = 1736^2 + 3043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12273545 - 2²² = 8079241 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13346 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (1861785).

Almost surely, 2^12273545 is an apocalyptic number.

It is an amenable number.

12273545 is a deficient number, since it is larger than the sum of its proper divisors (2620735).

12273545 is an equidigital number, since it uses as much as digits as its factorization.

12273545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27675.

The product of its digits is 8400, while the sum is 29.

The square root of 12273545 is about 3503.3619567495. The cubic root of 12273545 is about 230.6694108602.

The spelling of 12273545 in words is "twelve million, two hundred seventy-three thousand, five hundred forty-five".