2451243 has 4 divisors (see below), whose sum is σ = 3268328. Its totient is φ = 1634160.

The previous prime is 2451233. The next prime is 2451257. The reversal of 2451243 is 3421542.

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

It is not a de Polignac number, because 2451243 - 2¹⁰ = 2450219 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4 + 5³ + 1 + 2²¹ + 4⁹ + 3¹⁰ .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2451203) 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, 408538 + ... + 408543.

It is an arithmetic number, because the mean of its divisors is an integer number (817082).

2^2451243 is an apocalyptic number.

2451243 is a deficient number, since it is larger than the sum of its proper divisors (817085).

2451243 is an equidigital number, since it uses as much as digits as its factorization.

2451243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817084.

The product of its digits is 960, while the sum is 21.

The square root of 2451243 is about 1565.6445956858. The cubic root of 2451243 is about 134.8327696103.

Adding to 2451243 its reverse (3421542), we get a palindrome (5872785).

Subtracting 2451243 from its reverse (3421542), we obtain a cube (970299 = 99³).

The spelling of 2451243 in words is "two million, four hundred fifty-one thousand, two hundred forty-three".