51217064 has 16 divisors (see below), whose sum is σ = 97607220. Its totient is φ = 25188480.

The previous prime is 51217051. The next prime is 51217087. The reversal of 51217064 is 46071215.

It can be written as a sum of positive squares in 2 ways, for example, as 41344900 + 9872164 = 6430^2 + 3142^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51989 + ... + 52964.

Almost surely, 2^51217064 is an apocalyptic number.

It is an amenable number.

51217064 is a deficient number, since it is larger than the sum of its proper divisors (46390156).

51217064 is a wasteful number, since it uses less digits than its factorization.

51217064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105020 (or 105016 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51217064 is about 7156.6098119151. The cubic root of 51217064 is about 371.3683542278.

Adding to 51217064 its reverse (46071215), we get a palindrome (97288279).

It can be divided in two parts, 512 and 17064, that added together give a cube (17576 = 26³).

The spelling of 51217064 in words is "fifty-one million, two hundred seventeen thousand, sixty-four".