27975497 has 8 divisors (see below), whose sum is σ = 30566592. Its totient is φ = 25392400.

The previous prime is 27975473. The next prime is 27975509. The reversal of 27975497 is 79457972.

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

It is not a de Polignac number, because 27975497 - 2²⁴ = 11198281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27975457) 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, 7172 + ... + 10362.

It is an arithmetic number, because the mean of its divisors is an integer number (3820824).

Almost surely, 2^27975497 is an apocalyptic number.

It is an amenable number.

27975497 is a deficient number, since it is larger than the sum of its proper divisors (2591095).

27975497 is a wasteful number, since it uses less digits than its factorization.

27975497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999.

The product of its digits is 1111320, while the sum is 50.

The square root of 27975497 is about 5289.1867994995. The cubic root of 27975497 is about 303.5702933133.

The spelling of 27975497 in words is "twenty-seven million, nine hundred seventy-five thousand, four hundred ninety-seven".