51343432 has 32 divisors (see below), whose sum is σ = 112104000. Its totient is φ = 21587904.

The previous prime is 51343423. The next prime is 51343441. The reversal of 51343432 is 23434315.

It is an interprime number because it is at equal distance from previous prime (51343423) and next prime (51343441).

It is a super-2 number, since 2×51343432² = 5272296019077248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51343397 and 51343406.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5682 + ... + 11617.

It is an arithmetic number, because the mean of its divisors is an integer number (3503250).

Almost surely, 2^51343432 is an apocalyptic number.

It is an amenable number.

51343432 is an abundant number, since it is smaller than the sum of its proper divisors (60760568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51343432 is a wasteful number, since it uses less digits than its factorization.

51343432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17365 (or 17361 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 51343432 is about 7165.4331341518. The cubic root of 51343432 is about 371.6735294257.

Adding to 51343432 its reverse (23434315), we get a palindrome (74777747).

The spelling of 51343432 in words is "fifty-one million, three hundred forty-three thousand, four hundred thirty-two".