51065133 has 8 divisors (see below), whose sum is σ = 77813568. Its totient is φ = 29180064.

The previous prime is 51065111. The next prime is 51065137. The reversal of 51065133 is 33156015.

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

It is not a de Polignac number, because 51065133 - 2¹⁰ = 51064109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51065137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215816 + ... + 1215857.

It is an arithmetic number, because the mean of its divisors is an integer number (9726696).

Almost surely, 2^51065133 is an apocalyptic number.

It is an amenable number.

51065133 is a deficient number, since it is larger than the sum of its proper divisors (26748435).

51065133 is a wasteful number, since it uses less digits than its factorization.

51065133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431683.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 51065133 is about 7145.9871956224. The cubic root of 51065133 is about 371.0007798048. Note that the first 3 decimals are identical.

The spelling of 51065133 in words is "fifty-one million, sixty-five thousand, one hundred thirty-three".