513041403 has 16 divisors (see below), whose sum is σ = 795029760. Its totient is φ = 288196896.

The previous prime is 513041393. The next prime is 513041443. The reversal of 513041403 is 304140315.

It is not a de Polignac number, because 513041403 - 2⁶ = 513041339 is a prime.

It is a super-2 number, since 2×513041403² = 526422962384416818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 513041403.

It is not an unprimeable number, because it can be changed into a prime (513041443) 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, 205800 + ... + 208277.

It is an arithmetic number, because the mean of its divisors is an integer number (49689360).

Almost surely, 2^513041403 is an apocalyptic number.

513041403 is a deficient number, since it is larger than the sum of its proper divisors (281988357).

513041403 is a wasteful number, since it uses less digits than its factorization.

513041403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414146.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 513041403 is about 22650.4172809244. The cubic root of 513041403 is about 800.5420300672.

Adding to 513041403 its reverse (304140315), we get a palindrome (817181718).

The spelling of 513041403 in words is "five hundred thirteen million, forty-one thousand, four hundred three".