27945601 has 4 divisors (see below), whose sum is σ = 28847104. Its totient is φ = 27044100.

The previous prime is 27945563. The next prime is 27945607. The reversal of 27945601 is 10654972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27945601 - 2⁹ = 27945089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27945607) 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, 450705 + ... + 450766.

It is an arithmetic number, because the mean of its divisors is an integer number (7211776).

Almost surely, 2^27945601 is an apocalyptic number.

It is an amenable number.

27945601 is a deficient number, since it is larger than the sum of its proper divisors (901503).

27945601 is an equidigital number, since it uses as much as digits as its factorization.

27945601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901502.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 27945601 is about 5286.3599007256. The cubic root of 27945601 is about 303.4621180261.

The spelling of 27945601 in words is "twenty-seven million, nine hundred forty-five thousand, six hundred one".