2137091 has 8 divisors (see below), whose sum is σ = 2433024. Its totient is φ = 1858120.

The previous prime is 2137073. The next prime is 2137117. The reversal of 2137091 is 1907312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2137091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (2137021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3971 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (304128).

2^2137091 is an apocalyptic number.

2137091 is a deficient number, since it is larger than the sum of its proper divisors (295933).

2137091 is a wasteful number, since it uses less digits than its factorization.

2137091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2137091 is about 1461.8792699809. The cubic root of 2137091 is about 128.8074566816.

The spelling of 2137091 in words is "two million, one hundred thirty-seven thousand, ninety-one".