27245009 has 4 divisors (see below), whose sum is σ = 29721840. Its totient is φ = 24768180.

The previous prime is 27244991. The next prime is 27245011. The reversal of 27245009 is 90054272.

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 27245009 - 2¹⁶ = 27179473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27245809) 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, 1238399 + ... + 1238420.

It is an arithmetic number, because the mean of its divisors is an integer number (7430460).

Almost surely, 2^27245009 is an apocalyptic number.

It is an amenable number.

27245009 is a deficient number, since it is larger than the sum of its proper divisors (2476831).

27245009 is a wasteful number, since it uses less digits than its factorization.

27245009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476830.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 27245009 is about 5219.6751814648. The cubic root of 27245009 is about 300.9047096662.

The spelling of 27245009 in words is "twenty-seven million, two hundred forty-five thousand, nine".