51756007 has 16 divisors (see below), whose sum is σ = 56881440. Its totient is φ = 46891008.

The previous prime is 51755993. The next prime is 51756013. The reversal of 51756007 is 70065715.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51756007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51756007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51756017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66919 + ... + 67687.

It is an arithmetic number, because the mean of its divisors is an integer number (3555090).

Almost surely, 2^51756007 is an apocalyptic number.

51756007 is a deficient number, since it is larger than the sum of its proper divisors (5125433).

51756007 is a wasteful number, since it uses less digits than its factorization.

51756007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 51756007 is about 7194.1647882155. The cubic root of 51756007 is about 372.6664139400. Note that the first 3 decimals are identical.

The spelling of 51756007 in words is "fifty-one million, seven hundred fifty-six thousand, seven".