511145103 has 16 divisors (see below), whose sum is σ = 824705280. Its totient is φ = 274901376.

The previous prime is 511145093. The next prime is 511145113. The reversal of 511145103 is 301541115.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (511145093) and next prime (511145113).

It is not a de Polignac number, because 511145103 - 2⁵ = 511145071 is a prime.

It is a super-2 number, since 2×511145103² = 522538632641761218, 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 511145103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511145113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715533 + ... + 716246.

It is an arithmetic number, because the mean of its divisors is an integer number (51544080).

Almost surely, 2^511145103 is an apocalyptic number.

511145103 is a deficient number, since it is larger than the sum of its proper divisors (313560177).

511145103 is a wasteful number, since it uses less digits than its factorization.

511145103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431806.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 511145103 is about 22608.5183725073. The cubic root of 511145103 is about 799.5544930964.

Adding to 511145103 its reverse (301541115), we get a palindrome (812686218).

The spelling of 511145103 in words is "five hundred eleven million, one hundred forty-five thousand, one hundred three".