27997043 has 4 divisors (see below), whose sum is σ = 28168968. Its totient is φ = 27825120.

The previous prime is 27997037. The next prime is 27997069. The reversal of 27997043 is 34079972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27997043 - 2¹⁶ = 27931507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27997243) 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, 85718 + ... + 86043.

It is an arithmetic number, because the mean of its divisors is an integer number (7042242).

Almost surely, 2^27997043 is an apocalyptic number.

27997043 is a deficient number, since it is larger than the sum of its proper divisors (171925).

27997043 is a wasteful number, since it uses less digits than its factorization.

27997043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171924.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 27997043 is about 5291.2232045152. The cubic root of 27997043 is about 303.6482072951.

The spelling of 27997043 in words is "twenty-seven million, nine hundred ninety-seven thousand, forty-three".