57066855 has 8 divisors (see below), whose sum is σ = 91306992. Its totient is φ = 30435648.

The previous prime is 57066853. The next prime is 57066857. The reversal of 57066855 is 55866075.

It is an interprime number because it is at equal distance from previous prime (57066853) and next prime (57066857).

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

It is not a de Polignac number, because 57066855 - 2¹ = 57066853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57066853) 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, 1902214 + ... + 1902243.

It is an arithmetic number, because the mean of its divisors is an integer number (11413374).

Almost surely, 2^57066855 is an apocalyptic number.

57066855 is a deficient number, since it is larger than the sum of its proper divisors (34240137).

57066855 is a wasteful number, since it uses less digits than its factorization.

57066855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804465.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 57066855 is about 7554.2607182967. The cubic root of 57066855 is about 385.0005172310. Note that the first 3 decimals are identical.

It can be divided in two parts, 5706 and 6855, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 57066855 in words is "fifty-seven million, sixty-six thousand, eight hundred fifty-five".