51272072 has 8 divisors (see below), whose sum is σ = 96135150. Its totient is φ = 25636032.

The previous prime is 51272063. The next prime is 51272093. The reversal of 51272072 is 27027215.

It can be written as a sum of positive squares in only one way, i.e., 28366276 + 22905796 = 5326^2 + 4786^2 .

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3204497 + ... + 3204512.

Almost surely, 2^51272072 is an apocalyptic number.

It is an amenable number.

51272072 is a deficient number, since it is larger than the sum of its proper divisors (44863078).

51272072 is a wasteful number, since it uses less digits than its factorization.

51272072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409015 (or 6409011 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 51272072 is about 7160.4519410439. The cubic root of 51272072 is about 371.5012586400.

Adding to 51272072 its reverse (27027215), we get a palindrome (78299287).

The spelling of 51272072 in words is "fifty-one million, two hundred seventy-two thousand, seventy-two".