51887199 has 16 divisors (see below), whose sum is σ = 85148672. Its totient is φ = 27368928.

The previous prime is 51887191. The next prime is 51887203. The reversal of 51887199 is 99178815.

It is not a de Polignac number, because 51887199 - 2³ = 51887191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887191) 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 15 ways as a sum of consecutive naturals, for example, 94759 + ... + 95304.

It is an arithmetic number, because the mean of its divisors is an integer number (5321792).

Almost surely, 2^51887199 is an apocalyptic number.

51887199 is a deficient number, since it is larger than the sum of its proper divisors (33261473).

51887199 is a wasteful number, since it uses less digits than its factorization.

51887199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190086.

The product of its digits is 181440, while the sum is 48.

The square root of 51887199 is about 7203.2769626053. The cubic root of 51887199 is about 372.9810286311.

The spelling of 51887199 in words is "fifty-one million, eight hundred eighty-seven thousand, one hundred ninety-nine".