2091237 has 4 divisors (see below), whose sum is σ = 2788320. Its totient is φ = 1394156.

The previous prime is 2091227. The next prime is 2091239. The reversal of 2091237 is 7321902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2091237 - 2¹⁰ = 2090213 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091239) 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, 348537 + ... + 348542.

It is an arithmetic number, because the mean of its divisors is an integer number (697080).

2^2091237 is an apocalyptic number.

It is an amenable number.

2091237 is a deficient number, since it is larger than the sum of its proper divisors (697083).

2091237 is an equidigital number, since it uses as much as digits as its factorization.

2091237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697082.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2091237 is about 1446.1109915909. The cubic root of 2091237 is about 127.8795456991.

The spelling of 2091237 in words is "two million, ninety-one thousand, two hundred thirty-seven".