50891250 has 80 divisors (see below), whose sum is σ = 130683168. Its totient is φ = 13200000.

The previous prime is 50891219. The next prime is 50891261. The reversal of 50891250 is 5219805.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 153585 + ... + 153915.

Almost surely, 2^50891250 is an apocalyptic number.

50891250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 50891250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65341584).

50891250 is an abundant number, since it is smaller than the sum of its proper divisors (79791918).

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

50891250 is a wasteful number, since it uses less digits than its factorization.

50891250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 50891250 is about 7133.8103423066. The cubic root of 50891250 is about 370.5791999783.

The spelling of 50891250 in words is "fifty million, eight hundred ninety-one thousand, two hundred fifty".