2564158 has 4 divisors (see below), whose sum is σ = 3846240. Its totient is φ = 1282078.

The previous prime is 2564147. The next prime is 2564171. The reversal of 2564158 is 8514652.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641038 + ... + 641041.

It is an arithmetic number, because the mean of its divisors is an integer number (961560).

2^2564158 is an apocalyptic number.

2564158 is a deficient number, since it is larger than the sum of its proper divisors (1282082).

2564158 is a wasteful number, since it uses less digits than its factorization.

2564158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282081.

The product of its digits is 9600, while the sum is 31.

The square root of 2564158 is about 1601.2988478107. The cubic root of 2564158 is about 136.8720990051.

The spelling of 2564158 in words is "two million, five hundred sixty-four thousand, one hundred fifty-eight".