2140251 has 4 divisors (see below), whose sum is σ = 2853672. Its totient is φ = 1426832.

The previous prime is 2140231. The next prime is 2140253. The reversal of 2140251 is 1520412.

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 2140251 - 2¹⁰ = 2139227 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 2140251.

It is not an unprimeable number, because it can be changed into a prime (2140253) 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, 356706 + ... + 356711.

It is an arithmetic number, because the mean of its divisors is an integer number (713418).

2^2140251 is an apocalyptic number.

2140251 is a deficient number, since it is larger than the sum of its proper divisors (713421).

2140251 is an equidigital number, since it uses as much as digits as its factorization.

2140251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713420.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2140251 is about 1462.9596713512. The cubic root of 2140251 is about 128.8709122713.

Adding to 2140251 its reverse (1520412), we get a palindrome (3660663).

The spelling of 2140251 in words is "two million, one hundred forty thousand, two hundred fifty-one".