1125552503 has 4 divisors (see below), whose sum is σ = 1125713568. Its totient is φ = 1125391440.

The previous prime is 1125552481. The next prime is 1125552511. The reversal of 1125552503 is 3052555211.

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 1125552503 - 2¹² = 1125548407 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 (1125552803) 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, 69551 + ... + 84192.

It is an arithmetic number, because the mean of its divisors is an integer number (281428392).

Almost surely, 2^1125552503 is an apocalyptic number.

1125552503 is a deficient number, since it is larger than the sum of its proper divisors (161065).

1125552503 is an equidigital number, since it uses as much as digits as its factorization.

1125552503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161064.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1125552503 is about 33549.2548799523. The cubic root of 1125552503 is about 1040.2121432987.

The spelling of 1125552503 in words is "one billion, one hundred twenty-five million, five hundred fifty-two thousand, five hundred three".