57000018 has 16 divisors (see below), whose sum is σ = 115932960. Its totient is φ = 18677856.

The previous prime is 57000011. The next prime is 57000037. The reversal of 57000018 is 81000075.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56999958 and 57000003.

It is not an unprimeable number, because it can be changed into a prime (57000011) by changing a digit.

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, 80155 + ... + 80862.

It is an arithmetic number, because the mean of its divisors is an integer number (7245810).

Almost surely, 2^57000018 is an apocalyptic number.

57000018 is an abundant number, since it is smaller than the sum of its proper divisors (58932942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57000018 is a wasteful number, since it uses less digits than its factorization.

57000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161081.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 57000018 is about 7549.8356273498. The cubic root of 57000018 is about 384.8501536382.

The spelling of 57000018 in words is "fifty-seven million, eighteen", and thus it is an aban number and an uban number.