57066197 has 4 divisors (see below), whose sum is σ = 59547360. Its totient is φ = 54585036.

The previous prime is 57066181. The next prime is 57066199. The reversal of 57066197 is 79166075.

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 57066197 - 2⁴ = 57066181 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 (57066199) 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, 1240547 + ... + 1240592.

It is an arithmetic number, because the mean of its divisors is an integer number (14886840).

Almost surely, 2^57066197 is an apocalyptic number.

It is an amenable number.

57066197 is a deficient number, since it is larger than the sum of its proper divisors (2481163).

57066197 is a wasteful number, since it uses less digits than its factorization.

57066197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481162.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 57066197 is about 7554.2171665898. The cubic root of 57066197 is about 384.9990374969. Note that the first 3 decimals are identical.

The spelling of 57066197 in words is "fifty-seven million, sixty-six thousand, one hundred ninety-seven".