2553502403 has 4 divisors (see below), whose sum is σ = 2641554240. Its totient is φ = 2465450568.

The previous prime is 2553502381. The next prime is 2553502409. The reversal of 2553502403 is 3042053552.

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

It is a cyclic number.

It is not a de Polignac number, because 2553502403 - 2¹⁶ = 2553436867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 88051807 = 2553502403 / (2 + 5 + 5 + 3 + 5 + 0 + 2 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2553502409) 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, 44025875 + ... + 44025932.

It is an arithmetic number, because the mean of its divisors is an integer number (660388560).

Almost surely, 2^2553502403 is an apocalyptic number.

2553502403 is a deficient number, since it is larger than the sum of its proper divisors (88051837).

2553502403 is an equidigital number, since it uses as much as digits as its factorization.

2553502403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88051836.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 2553502403 is about 50532.1917494185. The cubic root of 2553502403 is about 1366.8224085915.

Adding to 2553502403 its reverse (3042053552), we get a palindrome (5595555955).

The spelling of 2553502403 in words is "two billion, five hundred fifty-three million, five hundred two thousand, four hundred three".