50013522 has 72 divisors (see below), whose sum is σ = 120501108. Its totient is φ = 14976000.

The previous prime is 50013517. The next prime is 50013547. The reversal of 50013522 is 22531005.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9678321 + 40335201 = 3111^2 + 6351^2 .

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 = 50013495 and 50013504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 124522 + ... + 124922.

Almost surely, 2^50013522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50013522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60250554).

50013522 is an abundant number, since it is smaller than the sum of its proper divisors (70487586).

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

50013522 is a wasteful number, since it uses less digits than its factorization.

50013522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 460 counting only the distinct ones).

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

The square root of 50013522 is about 7072.0238970184. The cubic root of 50013522 is about 368.4363571866.

Adding to 50013522 its reverse (22531005), we get a palindrome (72544527).

The spelling of 50013522 in words is "fifty million, thirteen thousand, five hundred twenty-two".