2451245 has 4 divisors (see below), whose sum is σ = 2941500. Its totient is φ = 1960992.

The previous prime is 2451233. The next prime is 2451257. The reversal of 2451245 is 5421542.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2451233) and next prime (2451257).

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 797449 = 1286^2 + 893^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451245 - 2⁸ = 2450989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2451245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245120 + ... + 245129.

It is an arithmetic number, because the mean of its divisors is an integer number (735375).

2^2451245 is an apocalyptic number.

It is an amenable number.

2451245 is a deficient number, since it is larger than the sum of its proper divisors (490255).

2451245 is an equidigital number, since it uses as much as digits as its factorization.

2451245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490254.

The product of its digits is 1600, while the sum is 23.

The square root of 2451245 is about 1565.6452344002. The cubic root of 2451245 is about 134.8328062809.

Adding to 2451245 its reverse (5421542), we get a palindrome (7872787).

The spelling of 2451245 in words is "two million, four hundred fifty-one thousand, two hundred forty-five".