50998987 has 16 divisors (see below), whose sum is σ = 56775040. Its totient is φ = 45505152.

The previous prime is 50998979. The next prime is 50998991. The reversal of 50998987 is 78989905.

50998987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 50998987 - 2³ = 50998979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50998187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109918 + ... + 110380.

It is an arithmetic number, because the mean of its divisors is an integer number (3548440).

Almost surely, 2^50998987 is an apocalyptic number.

50998987 is a deficient number, since it is larger than the sum of its proper divisors (5776053).

50998987 is a wasteful number, since it uses less digits than its factorization.

50998987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 50998987 is about 7141.3575040044. The cubic root of 50998987 is about 370.8405215905.

It can be divided in two parts, 5099898 and 7, that added together give a palindrome (5099905).

The spelling of 50998987 in words is "fifty million, nine hundred ninety-eight thousand, nine hundred eighty-seven".