50998920 has 128 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 11529216.

The previous prime is 50998919. The next prime is 50998921. The reversal of 50998920 is 2989905.

It is an interprime number because it is at equal distance from previous prime (50998919) and next prime (50998921).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (50998921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91282 + ... + 91838.

It is an arithmetic number, because the mean of its divisors is an integer number (1381050).

Almost surely, 2^50998920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50998920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88387200).

50998920 is an abundant number, since it is smaller than the sum of its proper divisors (125775480).

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

50998920 is a wasteful number, since it uses less digits than its factorization.

50998920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 50998920 is about 7141.3528130180. The cubic root of 50998920 is about 370.8403591930.

The spelling of 50998920 in words is "fifty million, nine hundred ninety-eight thousand, nine hundred twenty".