51750663 has 4 divisors (see below), whose sum is σ = 69000888. Its totient is φ = 34500440.

The previous prime is 51750641. The next prime is 51750689. The reversal of 51750663 is 36605715.

51750663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51750663 - 2⁸ = 51750407 is a prime.

It is a super-2 number, since 2×51750663² = 5356262241879138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51750613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8625108 + ... + 8625113.

It is an arithmetic number, because the mean of its divisors is an integer number (17250222).

Almost surely, 2^51750663 is an apocalyptic number.

51750663 is a deficient number, since it is larger than the sum of its proper divisors (17250225).

51750663 is a wasteful number, since it uses less digits than its factorization.

51750663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17250224.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 51750663 is about 7193.7933665070. The cubic root of 51750663 is about 372.6535871013.

The spelling of 51750663 in words is "fifty-one million, seven hundred fifty thousand, six hundred sixty-three".