2554403 has 16 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 2234496.

The previous prime is 2554399. The next prime is 2554421. The reversal of 2554403 is 3044552.

It is not a de Polignac number, because 2554403 - 2² = 2554399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2554003) 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, 18308 + ... + 18446.

It is an arithmetic number, because the mean of its divisors is an integer number (181440).

2^2554403 is an apocalyptic number.

2554403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2554403 is a deficient number, since it is larger than the sum of its proper divisors (348637).

2554403 is a wasteful number, since it uses less digits than its factorization.

2554403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2554403 is about 1598.2499804474. The cubic root of 2554403 is about 136.6983078302.

Adding to 2554403 its reverse (3044552), we get a palindrome (5598955).

The spelling of 2554403 in words is "two million, five hundred fifty-four thousand, four hundred three".