57065217 has 8 divisors (see below), whose sum is σ = 83004000. Its totient is φ = 34584960.

The previous prime is 57065201. The next prime is 57065237. The reversal of 57065217 is 71256075.

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

It is not a de Polignac number, because 57065217 - 2⁴ = 57065201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1729249 = 57065217 / (5 + 7 + 0 + 6 + 5 + 2 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (57065237) 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, 864592 + ... + 864657.

It is an arithmetic number, because the mean of its divisors is an integer number (10375500).

Almost surely, 2^57065217 is an apocalyptic number.

It is an amenable number.

57065217 is a deficient number, since it is larger than the sum of its proper divisors (25938783).

57065217 is a wasteful number, since it uses less digits than its factorization.

57065217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729263.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 57065217 is about 7554.1523018801. The cubic root of 57065217 is about 384.9968336165.

The spelling of 57065217 in words is "fifty-seven million, sixty-five thousand, two hundred seventeen".