2400555 has 16 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 1212768.

The previous prime is 2400551. The next prime is 2400557. The reversal of 2400555 is 5550042.

It is not a de Polignac number, because 2400555 - 2² = 2400551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2400551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3927 + ... + 4496.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

2^2400555 is an apocalyptic number.

2400555 is a deficient number, since it is larger than the sum of its proper divisors (1642965).

2400555 is a wasteful number, since it uses less digits than its factorization.

2400555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 2400555 is about 1549.3724536082. The cubic root of 2400555 is about 133.8969096457.

Adding to 2400555 its reverse (5550042), we get a palindrome (7950597).

The spelling of 2400555 in words is "two million, four hundred thousand, five hundred fifty-five".