27945497 has 4 divisors (see below), whose sum is σ = 28002000. Its totient is φ = 27888996.

The previous prime is 27945493. The next prime is 27945517. The reversal of 27945497 is 79454972.

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 27945497 - 2² = 27945493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27945493) 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, 27503 + ... + 28500.

It is an arithmetic number, because the mean of its divisors is an integer number (7000500).

Almost surely, 2^27945497 is an apocalyptic number.

It is an amenable number.

27945497 is a deficient number, since it is larger than the sum of its proper divisors (56503).

27945497 is an equidigital number, since it uses as much as digits as its factorization.

27945497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56502.

The product of its digits is 635040, while the sum is 47.

The square root of 27945497 is about 5286.3500640801. The cubic root of 27945497 is about 303.4617415793.

The spelling of 27945497 in words is "twenty-seven million, nine hundred forty-five thousand, four hundred ninety-seven".