50971998 has 64 divisors (see below), whose sum is σ = 131235840. Its totient is φ = 12808800.

The previous prime is 50971961. The next prime is 50972011. The reversal of 50971998 is 89917905.

50971998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-5 number, since 5×50971998⁵ (a number of 40 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12543 + ... + 16101.

It is an arithmetic number, because the mean of its divisors is an integer number (2050560).

Almost surely, 2^50971998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50971998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65617920).

50971998 is an abundant number, since it is smaller than the sum of its proper divisors (80263842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50971998 is a wasteful number, since it uses less digits than its factorization.

50971998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 50971998 is about 7139.4676272114. The cubic root of 50971998 is about 370.7750929648.

The spelling of 50971998 in words is "fifty million, nine hundred seventy-one thousand, nine hundred ninety-eight".