51431042 has 8 divisors (see below), whose sum is σ = 83080956. Its totient is φ = 23737392.

The previous prime is 51431027. The next prime is 51431047. The reversal of 51431042 is 24013415.

It can be written as a sum of positive squares in 2 ways, for example, as 51394561 + 36481 = 7169^2 + 191^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51431047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989033 + ... + 989084.

Almost surely, 2^51431042 is an apocalyptic number.

51431042 is a deficient number, since it is larger than the sum of its proper divisors (31649914).

51431042 is a wasteful number, since it uses less digits than its factorization.

51431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978132.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51431042 is about 7171.5439063008. The cubic root of 51431042 is about 371.8848113317.

Adding to 51431042 its reverse (24013415), we get a palindrome (75444457).

The spelling of 51431042 in words is "fifty-one million, four hundred thirty-one thousand, forty-two".