130504503 has 4 divisors (see below), whose sum is σ = 174006008. Its totient is φ = 87003000.

The previous prime is 130504499. The next prime is 130504511. The reversal of 130504503 is 305405031.

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

It is not a de Polignac number, because 130504503 - 2² = 130504499 is a prime.

It is a super-4 number, since 4×130504503⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130504503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130504573) 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, 21750748 + ... + 21750753.

It is an arithmetic number, because the mean of its divisors is an integer number (43501502).

Almost surely, 2^130504503 is an apocalyptic number.

130504503 is a deficient number, since it is larger than the sum of its proper divisors (43501505).

130504503 is an equidigital number, since it uses as much as digits as its factorization.

130504503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43501504.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 130504503 is about 11423.8567480514. The cubic root of 130504503 is about 507.2341662289.

Adding to 130504503 its reverse (305405031), we get a palindrome (435909534).

The spelling of 130504503 in words is "one hundred thirty million, five hundred four thousand, five hundred three".