2191353 has 4 divisors (see below), whose sum is σ = 2921808. Its totient is φ = 1460900.

The previous prime is 2191339. The next prime is 2191363. The reversal of 2191353 is 3531912.

It is a happy number.

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 2191353 - 2⁴ = 2191337 is a prime.

It is a D-number.

2191353 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2191363) 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, 365223 + ... + 365228.

It is an arithmetic number, because the mean of its divisors is an integer number (730452).

2^2191353 is an apocalyptic number.

It is an amenable number.

2191353 is a deficient number, since it is larger than the sum of its proper divisors (730455).

2191353 is an equidigital number, since it uses as much as digits as its factorization.

2191353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730454.

The product of its digits is 810, while the sum is 24.

The square root of 2191353 is about 1480.3219244475. The cubic root of 2191353 is about 129.8885237648. Note that the first 3 decimals are identical.

The spelling of 2191353 in words is "two million, one hundred ninety-one thousand, three hundred fifty-three".