51431541 has 16 divisors (see below), whose sum is σ = 79094400. Its totient is φ = 29118528.

The previous prime is 51431521. The next prime is 51431563. The reversal of 51431541 is 14513415.

It is a happy number.

It is not a de Polignac number, because 51431541 - 2⁵ = 51431509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51431521) 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 15 ways as a sum of consecutive naturals, for example, 8946 + ... + 13523.

It is an arithmetic number, because the mean of its divisors is an integer number (4943400).

Almost surely, 2^51431541 is an apocalyptic number.

It is an amenable number.

51431541 is a deficient number, since it is larger than the sum of its proper divisors (27662859).

51431541 is a wasteful number, since it uses less digits than its factorization.

51431541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22588.

The product of its digits is 1200, while the sum is 24.

The square root of 51431541 is about 7171.5786964935. The cubic root of 51431541 is about 371.8860140419.

Adding to 51431541 its reverse (14513415), we get a palindrome (65944956).

The spelling of 51431541 in words is "fifty-one million, four hundred thirty-one thousand, five hundred forty-one".