51081055 has 8 divisors (see below), whose sum is σ = 61362000. Its totient is φ = 40821696.

The previous prime is 51081047. The next prime is 51081059. The reversal of 51081055 is 55018015.

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 51081055 - 2³ = 51081047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51081059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376 + ... + 10114.

It is an arithmetic number, because the mean of its divisors is an integer number (7670250).

Almost surely, 2^51081055 is an apocalyptic number.

51081055 is a deficient number, since it is larger than the sum of its proper divisors (10280945).

51081055 is a wasteful number, since it uses less digits than its factorization.

51081055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793.

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 51081055 is about 7147.1011606105. The cubic root of 51081055 is about 371.0393348829.

The spelling of 51081055 in words is "fifty-one million, eighty-one thousand, fifty-five".