51755900187 has 8 divisors (see below), whose sum is σ = 69011177040. Its totient is φ = 34502278400.

The previous prime is 51755900179. The next prime is 51755900197. The reversal of 51755900187 is 78100955715.

It is a happy number.

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 51755900187 - 2³ = 51755900179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51755900137) 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, 338862 + ... + 467267.

It is an arithmetic number, because the mean of its divisors is an integer number (8626397130).

Almost surely, 2^51755900187 is an apocalyptic number.

51755900187 is a deficient number, since it is larger than the sum of its proper divisors (17255276853).

51755900187 is a wasteful number, since it uses less digits than its factorization.

51755900187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827533.

The product of its (nonzero) digits is 441000, while the sum is 48.

The spelling of 51755900187 in words is "fifty-one billion, seven hundred fifty-five million, nine hundred thousand, one hundred eighty-seven".