51437668 has 6 divisors (see below), whose sum is σ = 90015926. Its totient is φ = 25718832.

The previous prime is 51437663. The next prime is 51437671. The reversal of 51437668 is 86673415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51236964 + 200704 = 7158^2 + 448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51437668.

It is not an unprimeable number, because it can be changed into a prime (51437663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6429705 + ... + 6429712.

Almost surely, 2^51437668 is an apocalyptic number.

It is an amenable number.

51437668 is a deficient number, since it is larger than the sum of its proper divisors (38578258).

51437668 is a wasteful number, since it uses less digits than its factorization.

51437668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12859421 (or 12859419 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 51437668 is about 7172.0058561047. The cubic root of 51437668 is about 371.9007809540.

The spelling of 51437668 in words is "fifty-one million, four hundred thirty-seven thousand, six hundred sixty-eight".