51896867 has 4 divisors (see below), whose sum is σ = 56614776. Its totient is φ = 47178960.

The previous prime is 51896851. The next prime is 51896891. The reversal of 51896867 is 76869815.

It is a happy number.

51896867 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 51896867 - 2⁴ = 51896851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51896807) 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, 2358938 + ... + 2358959.

It is an arithmetic number, because the mean of its divisors is an integer number (14153694).

Almost surely, 2^51896867 is an apocalyptic number.

51896867 is a deficient number, since it is larger than the sum of its proper divisors (4717909).

51896867 is a wasteful number, since it uses less digits than its factorization.

51896867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717908.

The product of its digits is 725760, while the sum is 50.

The square root of 51896867 is about 7203.9480148041. The cubic root of 51896867 is about 373.0041927044.

The spelling of 51896867 in words is "fifty-one million, eight hundred ninety-six thousand, eight hundred sixty-seven".