51413224 has 8 divisors (see below), whose sum is σ = 96399810. Its totient is φ = 25706608.

The previous prime is 51413207. The next prime is 51413227. The reversal of 51413224 is 42231415.

It can be written as a sum of positive squares in only one way, i.e., 49252324 + 2160900 = 7018^2 + 1470^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 51413195 and 51413204.

It is not an unprimeable number, because it can be changed into a prime (51413227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213319 + ... + 3213334.

Almost surely, 2^51413224 is an apocalyptic number.

It is an amenable number.

51413224 is a deficient number, since it is larger than the sum of its proper divisors (44986586).

51413224 is a wasteful number, since it uses less digits than its factorization.

51413224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426659 (or 6426655 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 51413224 is about 7170.3015278299. The cubic root of 51413224 is about 371.8418605593.

Adding to 51413224 its reverse (42231415), we get a palindrome (93644639).

The spelling of 51413224 in words is "fifty-one million, four hundred thirteen thousand, two hundred twenty-four".