51366670 has 8 divisors (see below), whose sum is σ = 92460024. Its totient is φ = 20546664.

The previous prime is 51366661. The next prime is 51366677. The reversal of 51366670 is 7666315.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51366677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568324 + ... + 2568343.

It is an arithmetic number, because the mean of its divisors is an integer number (11557503).

Almost surely, 2^51366670 is an apocalyptic number.

51366670 is a deficient number, since it is larger than the sum of its proper divisors (41093354).

51366670 is a wasteful number, since it uses less digits than its factorization.

51366670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136674.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 51366670 is about 7167.0544856308. The cubic root of 51366670 is about 371.7295940247.

The spelling of 51366670 in words is "fifty-one million, three hundred sixty-six thousand, six hundred seventy".