51940163 has 8 divisors (see below), whose sum is σ = 56714736. Its totient is φ = 47174400.

The previous prime is 51940139. The next prime is 51940171. The reversal of 51940163 is 36104915.

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 51940163 - 2⁶ = 51940099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51940663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19343 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (7089342).

Almost surely, 2^51940163 is an apocalyptic number.

51940163 is a deficient number, since it is larger than the sum of its proper divisors (4774573).

51940163 is a wasteful number, since it uses less digits than its factorization.

51940163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 51940163 is about 7206.9524072246. The cubic root of 51940163 is about 373.1078926097.

The spelling of 51940163 in words is "fifty-one million, nine hundred forty thousand, one hundred sixty-three".