103503553 has 2 divisors, whose sum is σ = 103503554. Its totient is φ = 103503552.

The previous prime is 103503539. The next prime is 103503577. The reversal of 103503553 is 355305301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92294449 + 11209104 = 9607^2 + 3348^2 .

It is a cyclic number.

It is not a de Polignac number, because 103503553 - 2⁹ = 103503041 is a prime.

It is not a weakly prime, because it can be changed into another prime (103003553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51751776 + 51751777.

It is an arithmetic number, because the mean of its divisors is an integer number (51751777).

Almost surely, 2^103503553 is an apocalyptic number.

It is an amenable number.

103503553 is a deficient number, since it is larger than the sum of its proper divisors (1).

103503553 is an equidigital number, since it uses as much as digits as its factorization.

103503553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 103503553 is about 10173.6695936127. The cubic root of 103503553 is about 469.5174661377.

Adding to 103503553 its reverse (355305301), we get a palindrome (458808854).

The spelling of 103503553 in words is "one hundred three million, five hundred three thousand, five hundred fifty-three".