51712203 has 4 divisors (see below), whose sum is σ = 68949608. Its totient is φ = 34474800.

The previous prime is 51712169. The next prime is 51712207. The reversal of 51712203 is 30221715.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51712203 - 2¹³ = 51704011 is a prime.

It is a super-2 number, since 2×51712203² = 5348303878226418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51712203.

It is not an unprimeable number, because it can be changed into a prime (51712207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618698 + ... + 8618703.

It is an arithmetic number, because the mean of its divisors is an integer number (17237402).

Almost surely, 2^51712203 is an apocalyptic number.

51712203 is a deficient number, since it is larger than the sum of its proper divisors (17237405).

51712203 is a wasteful number, since it uses less digits than its factorization.

51712203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17237404.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51712203 is about 7191.1197320028. The cubic root of 51712203 is about 372.5612481303.

Adding to 51712203 its reverse (30221715), we get a palindrome (81933918).

It can be divided in two parts, 51712 and 203, that added together give a palindrome (51915).

The spelling of 51712203 in words is "fifty-one million, seven hundred twelve thousand, two hundred three".