2552403 has 16 divisors (see below), whose sum is σ = 4094720. Its totient is φ = 1381536.

The previous prime is 2552393. The next prime is 2552413. The reversal of 2552403 is 3042552.

It is an interprime number because it is at equal distance from previous prime (2552393) and next prime (2552413).

It is not a de Polignac number, because 2552403 - 2⁴ = 2552387 is a prime.

It is a super-2 number, since 2×2552403² = 13029522148818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a d-powerful number, because it can be written as 2⁷ + 5³ + 5⁹ + 2¹¹ + 4⁸ + 0 + 3¹² .

2552403 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2552403.

It is not an unprimeable number, because it can be changed into a prime (2552413) 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, 2800 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (255920).

2^2552403 is an apocalyptic number.

2552403 is a deficient number, since it is larger than the sum of its proper divisors (1542317).

2552403 is a wasteful number, since it uses less digits than its factorization.

2552403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 2552403 is about 1597.6241735778. The cubic root of 2552403 is about 136.6626219968.

Adding to 2552403 its reverse (3042552), we get a palindrome (5594955).

The spelling of 2552403 in words is "two million, five hundred fifty-two thousand, four hundred three".