2005251 has 4 divisors (see below), whose sum is σ = 2673672. Its totient is φ = 1336832.

The previous prime is 2005249. The next prime is 2005261. The reversal of 2005251 is 1525002.

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

It is a cyclic number.

It is not a de Polignac number, because 2005251 - 2¹ = 2005249 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2005251.

It is not an unprimeable number, because it can be changed into a prime (2005231) 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, 334206 + ... + 334211.

It is an arithmetic number, because the mean of its divisors is an integer number (668418).

2^2005251 is an apocalyptic number.

2005251 is a deficient number, since it is larger than the sum of its proper divisors (668421).

2005251 is an equidigital number, since it uses as much as digits as its factorization.

2005251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668420.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2005251 is about 1416.0688542582. The cubic root of 2005251 is about 126.1022727211.

Subtracting from 2005251 its reverse (1525002), we obtain a square (480249 = 693²).

The spelling of 2005251 in words is "two million, five thousand, two hundred fifty-one".