2451355 has 4 divisors (see below), whose sum is σ = 2941632. Its totient is φ = 1961080.

The previous prime is 2451347. The next prime is 2451359. The reversal of 2451355 is 5531542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5531542 = 2 ⋅2765771.

It is not a de Polignac number, because 2451355 - 2³ = 2451347 is a prime.

It is a Duffinian number.

2451355 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2451359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245131 + ... + 245140.

It is an arithmetic number, because the mean of its divisors is an integer number (735408).

2^2451355 is an apocalyptic number.

2451355 is a deficient number, since it is larger than the sum of its proper divisors (490277).

2451355 is an equidigital number, since it uses as much as digits as its factorization.

2451355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490276.

The product of its digits is 3000, while the sum is 25.

The square root of 2451355 is about 1565.6803632926. The cubic root of 2451355 is about 134.8348231318.

Adding to 2451355 its reverse (5531542), we get a palindrome (7982897).

It can be divided in two parts, 245 and 1355, that added together give a square (1600 = 40²).

The spelling of 2451355 in words is "two million, four hundred fifty-one thousand, three hundred fifty-five".