2057018 has 4 divisors (see below), whose sum is σ = 3085530. Its totient is φ = 1028508.

The previous prime is 2057009. The next prime is 2057021. The reversal of 2057018 is 8107502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1329409 + 727609 = 1153^2 + 853^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2056984 and 2057002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514253 + ... + 514256.

2^2057018 is an apocalyptic number.

2057018 is a deficient number, since it is larger than the sum of its proper divisors (1028512).

2057018 is a wasteful number, since it uses less digits than its factorization.

2057018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028511.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2057018 is about 1434.2308042989. The cubic root of 2057018 is about 127.1782068461.

The spelling of 2057018 in words is "two million, fifty-seven thousand, eighteen".