51413544 has 288 divisors, whose sum is σ = 186732000. Its totient is φ = 12628224.

The previous prime is 51413543. The next prime is 51413561. The reversal of 51413544 is 44531415.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51413543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 871387 + ... + 871445.

It is an arithmetic number, because the mean of its divisors is an integer number (648375).

Almost surely, 2^51413544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51413544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93366000).

51413544 is an abundant number, since it is smaller than the sum of its proper divisors (135318456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51413544 is a wasteful number, since it uses less digits than its factorization.

51413544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 103 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51413544 is about 7170.3238420590. The cubic root of 51413544 is about 371.8426320155.

Adding to 51413544 its reverse (44531415), we get a palindrome (95944959).

It can be divided in two parts, 51 and 413544, that added together give a triangular number (413595 = T₉₀₉).

The spelling of 51413544 in words is "fifty-one million, four hundred thirteen thousand, five hundred forty-four".