57066271 has 4 divisors (see below), whose sum is σ = 57083544. Its totient is φ = 57049000.

The previous prime is 57066259. The next prime is 57066337. The reversal of 57066271 is 17266075.

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 57066271 - 2⁵ = 57066239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57066871) 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, 1960 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (14270886).

Almost surely, 2^57066271 is an apocalyptic number.

57066271 is a deficient number, since it is larger than the sum of its proper divisors (17273).

57066271 is a wasteful number, since it uses less digits than its factorization.

57066271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17272.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 57066271 is about 7554.2220645147. Note that the first 3 decimals coincide. The cubic root of 57066271 is about 384.9992039113. Note that the first 3 decimals are identical.

The spelling of 57066271 in words is "fifty-seven million, sixty-six thousand, two hundred seventy-one".