2185251 has 4 divisors (see below), whose sum is σ = 2913672. Its totient is φ = 1456832.

The previous prime is 2185241. The next prime is 2185279. The reversal of 2185251 is 1525812.

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 2185251 - 2⁶ = 2185187 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2185201) 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, 364206 + ... + 364211.

It is an arithmetic number, because the mean of its divisors is an integer number (728418).

2^2185251 is an apocalyptic number.

2185251 is a deficient number, since it is larger than the sum of its proper divisors (728421).

2185251 is an equidigital number, since it uses as much as digits as its factorization.

2185251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728420.

The product of its digits is 800, while the sum is 24.

The square root of 2185251 is about 1478.2594494878. The cubic root of 2185251 is about 129.7678499802.

The spelling of 2185251 in words is "two million, one hundred eighty-five thousand, two hundred fifty-one".