2137251 has 4 divisors (see below), whose sum is σ = 2849672. Its totient is φ = 1424832.

The previous prime is 2137243. The next prime is 2137259. The reversal of 2137251 is 1527312.

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

It is an interprime number because it is at equal distance from previous prime (2137243) and next prime (2137259).

It is not a de Polignac number, because 2137251 - 2³ = 2137243 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137259) 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, 356206 + ... + 356211.

It is an arithmetic number, because the mean of its divisors is an integer number (712418).

2^2137251 is an apocalyptic number.

2137251 is a deficient number, since it is larger than the sum of its proper divisors (712421).

2137251 is an equidigital number, since it uses as much as digits as its factorization.

2137251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712420.

The product of its digits is 420, while the sum is 21.

The square root of 2137251 is about 1461.9339930380. The cubic root of 2137251 is about 128.8106711257.

The spelling of 2137251 in words is "two million, one hundred thirty-seven thousand, two hundred fifty-one".