51985201 has 8 divisors (see below), whose sum is σ = 55559520. Its totient is φ = 48468288.

The previous prime is 51985163. The next prime is 51985207. The reversal of 51985201 is 10258915.

51985201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51985201 - 2²¹ = 49888049 is a prime.

It is a super-2 number, since 2×51985201² = 5404922246020802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51985207) 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 7 ways as a sum of consecutive naturals, for example, 12471 + ... + 16108.

It is an arithmetic number, because the mean of its divisors is an integer number (6944940).

Almost surely, 2^51985201 is an apocalyptic number.

It is an amenable number.

51985201 is a deficient number, since it is larger than the sum of its proper divisors (3574319).

51985201 is a wasteful number, since it uses less digits than its factorization.

51985201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28703.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 51985201 is about 7210.0763518842. The cubic root of 51985201 is about 373.2157037115.

The spelling of 51985201 in words is "fifty-one million, nine hundred eighty-five thousand, two hundred one".