51167663 has 4 divisors (see below), whose sum is σ = 53392368. Its totient is φ = 48942960.

The previous prime is 51167659. The next prime is 51167681. The reversal of 51167663 is 36676115.

It is a happy number.

51167663 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 51167663 - 2² = 51167659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51167693) 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, 1112318 + ... + 1112363.

It is an arithmetic number, because the mean of its divisors is an integer number (13348092).

Almost surely, 2^51167663 is an apocalyptic number.

51167663 is a deficient number, since it is larger than the sum of its proper divisors (2224705).

51167663 is a wasteful number, since it uses less digits than its factorization.

51167663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224704.

The product of its digits is 22680, while the sum is 35.

The square root of 51167663 is about 7153.1575545349. The cubic root of 51167663 is about 371.2489157159.

The spelling of 51167663 in words is "fifty-one million, one hundred sixty-seven thousand, six hundred sixty-three".