51031432 has 16 divisors (see below), whose sum is σ = 95855760. Its totient is φ = 25469904.

The previous prime is 51031423. The next prime is 51031439. The reversal of 51031432 is 23413015.

It is not an unprimeable number, because it can be changed into a prime (51031439) 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, 738 + ... + 10129.

It is an arithmetic number, because the mean of its divisors is an integer number (5990985).

Almost surely, 2^51031432 is an apocalyptic number.

It is an amenable number.

51031432 is a deficient number, since it is larger than the sum of its proper divisors (44824328).

51031432 is a wasteful number, since it uses less digits than its factorization.

51031432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11460 (or 11456 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51031432 is about 7143.6287697500. The cubic root of 51031432 is about 370.9191464862.

Adding to 51031432 its reverse (23413015), we get a palindrome (74444447).

The spelling of 51031432 in words is "fifty-one million, thirty-one thousand, four hundred thirty-two".