27145217 has 8 divisors (see below), whose sum is σ = 30030912. Its totient is φ = 24329200.

The previous prime is 27145213. The next prime is 27145219. The reversal of 27145217 is 71254172.

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

It is a cyclic number.

It is not a de Polignac number, because 27145217 - 2² = 27145213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27145217.

It is not an unprimeable number, because it can be changed into a prime (27145211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16598 + ... + 18159.

It is an arithmetic number, because the mean of its divisors is an integer number (3753864).

Almost surely, 2^27145217 is an apocalyptic number.

It is an amenable number.

27145217 is a deficient number, since it is larger than the sum of its proper divisors (2885695).

27145217 is a wasteful number, since it uses less digits than its factorization.

27145217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34839.

The product of its digits is 3920, while the sum is 29.

The square root of 27145217 is about 5210.1071965939. The cubic root of 27145217 is about 300.5368793694.

Adding to 27145217 its reverse (71254172), we get a palindrome (98399389).

The spelling of 27145217 in words is "twenty-seven million, one hundred forty-five thousand, two hundred seventeen".