4251522 has 32 divisors (see below), whose sum is σ = 9532224. Its totient is φ = 1252800.

The previous prime is 4251493. The next prime is 4251523. The reversal of 4251522 is 2251524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4251523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572 + ... + 3312.

It is an arithmetic number, because the mean of its divisors is an integer number (297882).

Almost surely, 2^4251522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4251522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4766112).

4251522 is an abundant number, since it is smaller than the sum of its proper divisors (5280702).

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

4251522 is a wasteful number, since it uses less digits than its factorization.

4251522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

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

The square root of 4251522 is about 2061.9219189872. The cubic root of 4251522 is about 161.9999237921. Note that the first 4 decimals are identical.

The spelling of 4251522 in words is "four million, two hundred fifty-one thousand, five hundred twenty-two".