51143603 has 6 divisors (see below), whose sum is σ = 59493636. Its totient is φ = 43837332.

The previous prime is 51143593. The next prime is 51143623. The reversal of 51143603 is 30634115.

It is a happy number.

51143603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51143603 - 2¹⁶ = 51078067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51143623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 521825 + ... + 521922.

It is an arithmetic number, because the mean of its divisors is an integer number (9915606).

Almost surely, 2^51143603 is an apocalyptic number.

51143603 is a deficient number, since it is larger than the sum of its proper divisors (8350033).

51143603 is a wasteful number, since it uses less digits than its factorization.

51143603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043761 (or 1043754 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51143603 is about 7151.4755820040. The cubic root of 51143603 is about 371.1907171794.

Adding to 51143603 its reverse (30634115), we get a palindrome (81777718).

The spelling of 51143603 in words is "fifty-one million, one hundred forty-three thousand, six hundred three".