4521522 has 8 divisors (see below), whose sum is σ = 9043056. Its totient is φ = 1507172.

The previous prime is 4521509. The next prime is 4521523. The reversal of 4521522 is 2251254.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

4521522 is an admirable number.

It is a super-2 number, since 2×4521522² = 40888322392968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4521523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376788 + ... + 376799.

It is an arithmetic number, because the mean of its divisors is an integer number (1130382).

Almost surely, 2^4521522 is an apocalyptic number.

4521522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4521522 is a wasteful number, since it uses less digits than its factorization.

4521522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753592.

The product of its digits is 800, while the sum is 21.

The square root of 4521522 is about 2126.3870767102. The cubic root of 4521522 is about 165.3591442461.

Adding to 4521522 its reverse (2251254), we get a palindrome (6772776).

The spelling of 4521522 in words is "four million, five hundred twenty-one thousand, five hundred twenty-two".