51468644 has 24 divisors (see below), whose sum is σ = 95185440. Its totient is φ = 24283584.

The previous prime is 51468643. The next prime is 51468647. The reversal of 51468644 is 44686415.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 51468598 and 51468607.

It is not an unprimeable number, because it can be changed into a prime (51468643) 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, 20312 + ... + 22704.

It is an arithmetic number, because the mean of its divisors is an integer number (3966060).

Almost surely, 2^51468644 is an apocalyptic number.

It is an amenable number.

51468644 is a deficient number, since it is larger than the sum of its proper divisors (43716796).

51468644 is a wasteful number, since it uses less digits than its factorization.

51468644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2697 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 51468644 is about 7174.1650385254. The cubic root of 51468644 is about 371.9754194264.

The spelling of 51468644 in words is "fifty-one million, four hundred sixty-eight thousand, six hundred forty-four".