57217070 has 16 divisors (see below), whose sum is σ = 109049328. Its totient is φ = 21540480.

The previous prime is 57217067. The next prime is 57217109. The reversal of 57217070 is 7071275.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168116 + ... + 168455.

It is an arithmetic number, because the mean of its divisors is an integer number (6815583).

Almost surely, 2^57217070 is an apocalyptic number.

57217070 is a deficient number, since it is larger than the sum of its proper divisors (51832258).

57217070 is a wasteful number, since it uses less digits than its factorization.

57217070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336595.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 57217070 is about 7564.1965865517. The cubic root of 57217070 is about 385.3380288683.

The spelling of 57217070 in words is "fifty-seven million, two hundred seventeen thousand, seventy".