513145003 has 6 divisors (see below), whose sum is σ = 596923836. Its totient is φ = 439838532.

The previous prime is 513144991. The next prime is 513145057. The reversal of 513145003 is 300541315.

It is a happy number.

It is not a de Polignac number, because 513145003 - 2¹⁷ = 513013931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513145903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5236125 + ... + 5236222.

It is an arithmetic number, because the mean of its divisors is an integer number (99487306).

Almost surely, 2^513145003 is an apocalyptic number.

513145003 is a deficient number, since it is larger than the sum of its proper divisors (83778833).

513145003 is a wasteful number, since it uses less digits than its factorization.

513145003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10472361 (or 10472354 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 513145003 is about 22652.7040990695. The cubic root of 513145003 is about 800.5959117305.

Adding to 513145003 its reverse (300541315), we get a palindrome (813686318).

The spelling of 513145003 in words is "five hundred thirteen million, one hundred forty-five thousand, three".