2572813 has 4 divisors (see below), whose sum is σ = 2616480. Its totient is φ = 2529148.

The previous prime is 2572811. The next prime is 2572859. The reversal of 2572813 is 3182752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2572813 - 2¹ = 2572811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21745 + ... + 21862.

It is an arithmetic number, because the mean of its divisors is an integer number (654120).

2^2572813 is an apocalyptic number.

It is an amenable number.

2572813 is a deficient number, since it is larger than the sum of its proper divisors (43667).

2572813 is an equidigital number, since it uses as much as digits as its factorization.

2572813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43666.

The product of its digits is 3360, while the sum is 28.

The square root of 2572813 is about 1603.9990648376. Note that the first 3 decimals coincide. The cubic root of 2572813 is about 137.0259243746.

The spelling of 2572813 in words is "two million, five hundred seventy-two thousand, eight hundred thirteen".