2150455 has 4 divisors (see below), whose sum is σ = 2580552. Its totient is φ = 1720360.

The previous prime is 2150453. The next prime is 2150471. The reversal of 2150455 is 5540512.

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

It is not a de Polignac number, because 2150455 - 2¹ = 2150453 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150453) 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, 215041 + ... + 215050.

It is an arithmetic number, because the mean of its divisors is an integer number (645138).

2^2150455 is an apocalyptic number.

2150455 is a deficient number, since it is larger than the sum of its proper divisors (430097).

2150455 is an equidigital number, since it uses as much as digits as its factorization.

2150455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430096.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2150455 is about 1466.4429753659. The cubic root of 2150455 is about 129.0753921013.

Adding to 2150455 its reverse (5540512), we get a palindrome (7690967).

The spelling of 2150455 in words is "two million, one hundred fifty thousand, four hundred fifty-five".