51180424 has 8 divisors (see below), whose sum is σ = 95963310. Its totient is φ = 25590208.

The previous prime is 51180413. The next prime is 51180427. The reversal of 51180424 is 42408115.

It can be written as a sum of positive squares in only one way, i.e., 34222500 + 16957924 = 5850^2 + 4118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51180427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198769 + ... + 3198784.

Almost surely, 2^51180424 is an apocalyptic number.

It is an amenable number.

51180424 is a deficient number, since it is larger than the sum of its proper divisors (44782886).

51180424 is a wasteful number, since it uses less digits than its factorization.

51180424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397559 (or 6397555 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 51180424 is about 7154.0494826357. The cubic root of 51180424 is about 371.2797757901.

Adding to 51180424 its reverse (42408115), we get a palindrome (93588539).

The spelling of 51180424 in words is "fifty-one million, one hundred eighty thousand, four hundred twenty-four".