2573906 has 4 divisors (see below), whose sum is σ = 3860862. Its totient is φ = 1286952.

The previous prime is 2573891. The next prime is 2573927. The reversal of 2573906 is 6093752.

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., 1836025 + 737881 = 1355^2 + 859^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643475 + ... + 643478.

2^2573906 is an apocalyptic number.

2573906 is a deficient number, since it is larger than the sum of its proper divisors (1286956).

2573906 is a wasteful number, since it uses less digits than its factorization.

2573906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286955.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 2573906 is about 1604.3397395814. The cubic root of 2573906 is about 137.0453257240.

The spelling of 2573906 in words is "two million, five hundred seventy-three thousand, nine hundred six".