2097178 has 4 divisors (see below), whose sum is σ = 3145770. Its totient is φ = 1048588.

The previous prime is 2097169. The next prime is 2097211. The reversal of 2097178 is 8717902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8717902 = 2 ⋅4358951.

It can be written as a sum of positive squares in only one way, i.e., 1530169 + 567009 = 1237^2 + 753^2 .

It is a d-powerful number, because it can be written as 2 + 0 + 9 + 7 + 1 + 7 + 8⁷ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524293 + ... + 524296.

2^2097178 is an apocalyptic number.

2097178 is a deficient number, since it is larger than the sum of its proper divisors (1048592).

2097178 is a wasteful number, since it uses less digits than its factorization.

2097178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048591.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2097178 is about 1448.1636647838. The cubic root of 2097178 is about 128.0005289692. Note that the first 3 decimals are identical.

The spelling of 2097178 in words is "two million, ninety-seven thousand, one hundred seventy-eight".