2400505 has 4 divisors (see below), whose sum is σ = 2880612. Its totient is φ = 1920400.

The previous prime is 2400481. The next prime is 2400511. The reversal of 2400505 is 5050042.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 1225449 = 1084^2 + 1107^2 .

It is not a de Polignac number, because 2400505 - 2⁵ = 2400473 is a prime.

It is a Duffinian number.

2400505 is a modest number, since divided by 505 gives 240 as remainder.

It is a plaindrome in base 9.

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, 240046 + ... + 240055.

It is an arithmetic number, because the mean of its divisors is an integer number (720153).

2^2400505 is an apocalyptic number.

It is an amenable number.

2400505 is a deficient number, since it is larger than the sum of its proper divisors (480107).

2400505 is an equidigital number, since it uses as much as digits as its factorization.

2400505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480106.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 2400505 is about 1549.3563179592. The cubic root of 2400505 is about 133.8959800145.

Adding to 2400505 its reverse (5050042), we get a palindrome (7450547).

The spelling of 2400505 in words is "two million, four hundred thousand, five hundred five".