51200431 has 8 divisors (see below), whose sum is σ = 52867584. Its totient is φ = 49553280.

The previous prime is 51200417. The next prime is 51200441. The reversal of 51200431 is 13400215.

51200431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51200431 is a prime.

It is a super-2 number, since 2×51200431² = 5242968269171522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51200441) 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 7 ways as a sum of consecutive naturals, for example, 291 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (6608448).

Almost surely, 2^51200431 is an apocalyptic number.

51200431 is a deficient number, since it is larger than the sum of its proper divisors (1667153).

51200431 is a wasteful number, since it uses less digits than its factorization.

51200431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51200431 is about 7155.4476449765. The cubic root of 51200431 is about 371.3281486261.

Adding to 51200431 its reverse (13400215), we get a palindrome (64600646).

It can be divided in two parts, 51 and 200431, that multiplied together give a triangular number (10221981 = T₄₅₂₁).

The spelling of 51200431 in words is "fifty-one million, two hundred thousand, four hundred thirty-one".