2404551 has 4 divisors (see below), whose sum is σ = 3206072. Its totient is φ = 1603032.

The previous prime is 2404543. The next prime is 2404613. The reversal of 2404551 is 1554042.

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

It is not a de Polignac number, because 2404551 - 2³ = 2404543 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2404541) 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, 400756 + ... + 400761.

It is an arithmetic number, because the mean of its divisors is an integer number (801518).

2^2404551 is an apocalyptic number.

2404551 is a deficient number, since it is larger than the sum of its proper divisors (801521).

2404551 is an equidigital number, since it uses as much as digits as its factorization.

2404551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801520.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2404551 is about 1550.6614717597. The cubic root of 2404551 is about 133.9711640632.

Adding to 2404551 its reverse (1554042), we get a palindrome (3958593).

The spelling of 2404551 in words is "two million, four hundred four thousand, five hundred fifty-one".