2451005 has 4 divisors (see below), whose sum is σ = 2941212. Its totient is φ = 1960800.

The previous prime is 2450999. The next prime is 2451011. The reversal of 2451005 is 5001542.

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 (2450999) and next prime (2451011).

It can be written as a sum of positive squares in 2 ways, for example, as 1844164 + 606841 = 1358^2 + 779^2 .

It is not a de Polignac number, because 2451005 - 2⁴ = 2450989 is a prime.

It is a Duffinian number.

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, 245096 + ... + 245105.

It is an arithmetic number, because the mean of its divisors is an integer number (735303).

2^2451005 is an apocalyptic number.

It is an amenable number.

2451005 is a deficient number, since it is larger than the sum of its proper divisors (490207).

2451005 is an equidigital number, since it uses as much as digits as its factorization.

2451005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490206.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2451005 is about 1565.5685868080. The cubic root of 2451005 is about 134.8284056696.

Adding to 2451005 its reverse (5001542), we get a palindrome (7452547).

The spelling of 2451005 in words is "two million, four hundred fifty-one thousand, five".