51331541 has 4 divisors (see below), whose sum is σ = 51359532. Its totient is φ = 51303552.

The previous prime is 51331513. The next prime is 51331573. The reversal of 51331541 is 14513315.

51331541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14513315 = 5 ⋅2902663.

It can be written as a sum of positive squares in 2 ways, for example, as 24850225 + 26481316 = 4985^2 + 5146^2 .

It is a cyclic number.

It is not a de Polignac number, because 51331541 - 2⁶ = 51331477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51331591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11036 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (12839883).

Almost surely, 2^51331541 is an apocalyptic number.

It is an amenable number.

51331541 is a deficient number, since it is larger than the sum of its proper divisors (27991).

51331541 is a wasteful number, since it uses less digits than its factorization.

51331541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27990.

The product of its digits is 900, while the sum is 23.

The square root of 51331541 is about 7164.6033386364. The cubic root of 51331541 is about 371.6448343489.

Adding to 51331541 its reverse (14513315), we get a palindrome (65844856).

The spelling of 51331541 in words is "fifty-one million, three hundred thirty-one thousand, five hundred forty-one".