5221512 has 48 divisors (see below), whose sum is σ = 14451840. Its totient is φ = 1702368.

The previous prime is 5221501. The next prime is 5221543. The reversal of 5221512 is 2151225.

It is a super-2 number, since 2×5221512² = 54528375132288, which contains 22 as substring.

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

It is an Ulam 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 11 ways as a sum of consecutive naturals, for example, 2613 + ... + 4155.

It is an arithmetic number, because the mean of its divisors is an integer number (301080).

Almost surely, 2^5221512 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 5221512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7225920).

5221512 is an abundant number, since it is smaller than the sum of its proper divisors (9230328).

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

5221512 is a wasteful number, since it uses less digits than its factorization.

5221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1595 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 5221512 is about 2285.0628000123. The cubic root of 5221512 is about 173.4863966833.

Adding to 5221512 its reverse (2151225), we get a palindrome (7372737).

The spelling of 5221512 in words is "five million, two hundred twenty-one thousand, five hundred twelve".