1103550503 has 8 divisors (see below), whose sum is σ = 1204125456. Its totient is φ = 1003017600.

The previous prime is 1103550479. The next prime is 1103550509. The reversal of 1103550503 is 3050553011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1103550503 - 2⁸ = 1103550247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103550509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73823 + ... + 87503.

It is an arithmetic number, because the mean of its divisors is an integer number (150515682).

Almost surely, 2^1103550503 is an apocalyptic number.

1103550503 is a deficient number, since it is larger than the sum of its proper divisors (100574953).

1103550503 is a wasteful number, since it uses less digits than its factorization.

1103550503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21025.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 1103550503 is about 33219.7306280469. The cubic root of 1103550503 is about 1033.3895631443.

The spelling of 1103550503 in words is "one billion, one hundred three million, five hundred fifty thousand, five hundred three".