2040455 has 4 divisors (see below), whose sum is σ = 2448552. Its totient is φ = 1632360.

The previous prime is 2040449. The next prime is 2040457. The reversal of 2040455 is 5540402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2040455 - 2¹⁶ = 1974919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204041 + ... + 204050.

It is an arithmetic number, because the mean of its divisors is an integer number (612138).

2^2040455 is an apocalyptic number.

2040455 is a deficient number, since it is larger than the sum of its proper divisors (408097).

2040455 is an equidigital number, since it uses as much as digits as its factorization.

2040455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408096.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2040455 is about 1428.4449586876. Note that the first 3 decimals coincide. The cubic root of 2040455 is about 126.8359425022.

Adding to 2040455 its reverse (5540402), we get a palindrome (7580857).

The spelling of 2040455 in words is "two million, forty thousand, four hundred fifty-five".