51431241 has 4 divisors (see below), whose sum is σ = 68574992. Its totient is φ = 34287492.

The previous prime is 51431213. The next prime is 51431249. The reversal of 51431241 is 14213415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51431241 - 2¹¹ = 51429193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51431249) 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, 8571871 + ... + 8571876.

It is an arithmetic number, because the mean of its divisors is an integer number (17143748).

Almost surely, 2^51431241 is an apocalyptic number.

It is an amenable number.

51431241 is a deficient number, since it is larger than the sum of its proper divisors (17143751).

51431241 is a wasteful number, since it uses less digits than its factorization.

51431241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143750.

The product of its digits is 480, while the sum is 21.

The square root of 51431241 is about 7171.5577805662. The cubic root of 51431241 is about 371.8852909705.

Adding to 51431241 its reverse (14213415), we get a palindrome (65644656).

The spelling of 51431241 in words is "fifty-one million, four hundred thirty-one thousand, two hundred forty-one".