2194457 has 2 divisors, whose sum is σ = 2194458. Its totient is φ = 2194456.

The previous prime is 2194447. The next prime is 2194471. The reversal of 2194457 is 7544912.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1907161 + 287296 = 1381^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194457 - 2⁴ = 2194441 is a prime.

It is not a weakly prime, because it can be changed into another prime (2194417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097228 + 1097229.

It is an arithmetic number, because the mean of its divisors is an integer number (1097229).

2^2194457 is an apocalyptic number.

It is an amenable number.

2194457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194457 is an equidigital number, since it uses as much as digits as its factorization.

2194457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 2194457 is about 1481.3699740443. The cubic root of 2194457 is about 129.9498228443.

The spelling of 2194457 in words is "two million, one hundred ninety-four thousand, four hundred fifty-seven".