51082887 has 8 divisors (see below), whose sum is σ = 71695360. Its totient is φ = 32262840.

The previous prime is 51082861. The next prime is 51082897. The reversal of 51082887 is 78828015.

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

It is not a de Polignac number, because 51082887 - 2²⁰ = 50034311 is a prime.

It is a super-2 number, since 2×51082887² = 5218922688509538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51082817) 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, 448039 + ... + 448152.

It is an arithmetic number, because the mean of its divisors is an integer number (8961920).

Almost surely, 2^51082887 is an apocalyptic number.

51082887 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51082887 is a deficient number, since it is larger than the sum of its proper divisors (20612473).

51082887 is a wasteful number, since it uses less digits than its factorization.

51082887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896213.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 51082887 is about 7147.2293233112. The cubic root of 51082887 is about 371.0437705518.

The spelling of 51082887 in words is "fifty-one million, eighty-two thousand, eight hundred eighty-seven".