1345520503 has 16 divisors (see below), whose sum is σ = 1410200064. Its totient is φ = 1282569120.

The previous prime is 1345520483. The next prime is 1345520507. The reversal of 1345520503 is 3050255431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345520503 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 (1345520507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437176 + ... + 440242.

It is an arithmetic number, because the mean of its divisors is an integer number (88137504).

Almost surely, 2^1345520503 is an apocalyptic number.

1345520503 is a deficient number, since it is larger than the sum of its proper divisors (64679561).

1345520503 is a wasteful number, since it uses less digits than its factorization.

1345520503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1345520503 is about 36681.3372575210. The cubic root of 1345520503 is about 1103.9856796325.

Adding to 1345520503 its reverse (3050255431), we get a palindrome (4395775934).

The spelling of 1345520503 in words is "one billion, three hundred forty-five million, five hundred twenty thousand, five hundred three".