51505441 has 8 divisors (see below), whose sum is σ = 57879360. Its totient is φ = 45476112.

The previous prime is 51505423. The next prime is 51505481. The reversal of 51505441 is 14450515.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51505441 - 2¹¹ = 51503393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51505481) 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 7 ways as a sum of consecutive naturals, for example, 85831 + ... + 86428.

It is an arithmetic number, because the mean of its divisors is an integer number (7234920).

Almost surely, 2^51505441 is an apocalyptic number.

It is an amenable number.

51505441 is a deficient number, since it is larger than the sum of its proper divisors (6373919).

51505441 is a wasteful number, since it uses less digits than its factorization.

51505441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172295.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 51505441 is about 7176.7291296244. The cubic root of 51505441 is about 372.0640450297.

Adding to 51505441 its reverse (14450515), we get a palindrome (65955956).

The spelling of 51505441 in words is "fifty-one million, five hundred five thousand, four hundred forty-one".