2530805 has 16 divisors (see below), whose sum is σ = 3231360. Its totient is φ = 1898688.

The previous prime is 2530799. The next prime is 2530831. The reversal of 2530805 is 5080352.

It is a cyclic number.

It is not a de Polignac number, because 2530805 - 2¹² = 2526709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6599 + ... + 6971.

It is an arithmetic number, because the mean of its divisors is an integer number (201960).

2^2530805 is an apocalyptic number.

It is an amenable number.

2530805 is a deficient number, since it is larger than the sum of its proper divisors (700555).

2530805 is a wasteful number, since it uses less digits than its factorization.

2530805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2530805 is about 1590.8504015149. The cubic root of 2530805 is about 136.2760576372.

The spelling of 2530805 in words is "two million, five hundred thirty thousand, eight hundred five".