51055887 has 8 divisors (see below), whose sum is σ = 69033600. Its totient is φ = 33557720.

The previous prime is 51055871. The next prime is 51055889. The reversal of 51055887 is 78855015.

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 51055887 - 2⁴ = 51055871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055889) 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, 119637 + ... + 120062.

It is an arithmetic number, because the mean of its divisors is an integer number (8629200).

Almost surely, 2^51055887 is an apocalyptic number.

51055887 is a deficient number, since it is larger than the sum of its proper divisors (17977713).

51055887 is a wasteful number, since it uses less digits than its factorization.

51055887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239773.

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 51055887 is about 7145.3402298281. The cubic root of 51055887 is about 370.9783869634.

The spelling of 51055887 in words is "fifty-one million, fifty-five thousand, eight hundred eighty-seven".