253320103 has 4 divisors (see below), whose sum is σ = 266652760. Its totient is φ = 239987448.

The previous prime is 253320079. The next prime is 253320107. The reversal of 253320103 is 301023352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253320103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 13332637 = 253320103 / (2 + 5 + 3 + 3 + 2 + 0 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253320107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6666300 + ... + 6666337.

It is an arithmetic number, because the mean of its divisors is an integer number (66663190).

Almost surely, 2^253320103 is an apocalyptic number.

253320103 is a deficient number, since it is larger than the sum of its proper divisors (13332657).

253320103 is a wasteful number, since it uses less digits than its factorization.

253320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13332656.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 253320103 is about 15916.0328913960. The cubic root of 253320103 is about 632.7369819221.

Adding to 253320103 its reverse (301023352), we get a palindrome (554343455).

It can be divided in two parts, 253 and 320103, that added together give a square (320356 = 566²).

The spelling of 253320103 in words is "two hundred fifty-three million, three hundred twenty thousand, one hundred three".