27020081 has 4 divisors (see below), whose sum is σ = 29476464. Its totient is φ = 24563700.

The previous prime is 27020023. The next prime is 27020111. The reversal of 27020081 is 18002072.

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 27020081 - 2¹⁸ = 26757937 is a prime.

It is a super-2 number, since 2×27020081² = 1460169554493122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27020381) 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, 1228175 + ... + 1228196.

It is an arithmetic number, because the mean of its divisors is an integer number (7369116).

Almost surely, 2^27020081 is an apocalyptic number.

It is an amenable number.

27020081 is a deficient number, since it is larger than the sum of its proper divisors (2456383).

27020081 is a wasteful number, since it uses less digits than its factorization.

27020081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456382.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 27020081 is about 5198.0843586845. The cubic root of 27020081 is about 300.0743556433.

Subtracting from 27020081 its reverse (18002072), we obtain a square (9018009 = 3003²).

The spelling of 27020081 in words is "twenty-seven million, twenty thousand, eighty-one".