50521320 has 160 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 13011840.

The previous prime is 50521313. The next prime is 50521333. The reversal of 50521320 is 2312505.

It is a happy number.

It is a super-3 number, since 3×50521320³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 50521293 and 50521302.

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, 100189 + ... + 100691.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^50521320 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 50521320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87816960).

50521320 is an abundant number, since it is smaller than the sum of its proper divisors (125112600).

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

50521320 is a wasteful number, since it uses less digits than its factorization.

50521320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 50521320 is about 7107.8351134505. The cubic root of 50521320 is about 369.6790984360.

Adding to 50521320 its reverse (2312505), we get a palindrome (52833825).

The spelling of 50521320 in words is "fifty million, five hundred twenty-one thousand, three hundred twenty".