51360665 has 8 divisors (see below), whose sum is σ = 62413440. Its totient is φ = 40568112.

The previous prime is 51360643. The next prime is 51360677. The reversal of 51360665 is 56606315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51360665 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64619 + ... + 65408.

It is an arithmetic number, because the mean of its divisors is an integer number (7801680).

Almost surely, 2^51360665 is an apocalyptic number.

It is an amenable number.

51360665 is a deficient number, since it is larger than the sum of its proper divisors (11052775).

51360665 is a wasteful number, since it uses less digits than its factorization.

51360665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130111.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 51360665 is about 7166.6355425681. The cubic root of 51360665 is about 371.7151078270.

It can be divided in two parts, 51360 and 665, that added together give a palindrome (52025).

The spelling of 51360665 in words is "fifty-one million, three hundred sixty thousand, six hundred sixty-five".