2146251 has 4 divisors (see below), whose sum is σ = 2861672. Its totient is φ = 1430832.

The previous prime is 2146247. The next prime is 2146253. The reversal of 2146251 is 1526412.

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

It is not a de Polignac number, because 2146251 - 2² = 2146247 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2146253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357706 + ... + 357711.

It is an arithmetic number, because the mean of its divisors is an integer number (715418).

2^2146251 is an apocalyptic number.

2146251 is a deficient number, since it is larger than the sum of its proper divisors (715421).

2146251 is an equidigital number, since it uses as much as digits as its factorization.

2146251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715420.

The product of its digits is 480, while the sum is 21.

The square root of 2146251 is about 1465.0088736933. The cubic root of 2146251 is about 128.9912258920.

The spelling of 2146251 in words is "two million, one hundred forty-six thousand, two hundred fifty-one".