2193457 has 4 divisors (see below), whose sum is σ = 2506816. Its totient is φ = 1880100.

The previous prime is 2193449. The next prime is 2193463. The reversal of 2193457 is 7543912.

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 2193457 - 2³ = 2193449 is a prime.

It is a super-2 number, since 2×2193457² = 9622507221698, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 9⁵ + 3¹¹ + 4⁶ + 5⁹ + 7 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193557) 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, 156669 + ... + 156682.

It is an arithmetic number, because the mean of its divisors is an integer number (626704).

2^2193457 is an apocalyptic number.

It is an amenable number.

2193457 is a deficient number, since it is larger than the sum of its proper divisors (313359).

2193457 is an equidigital number, since it uses as much as digits as its factorization.

2193457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313358.

The product of its digits is 7560, while the sum is 31.

The square root of 2193457 is about 1481.0324101788. The cubic root of 2193457 is about 129.9300807445.

The spelling of 2193457 in words is "two million, one hundred ninety-three thousand, four hundred fifty-seven".