7522443 has 8 divisors (see below), whose sum is σ = 11144400. Its totient is φ = 5014944.

The previous prime is 7522439. The next prime is 7522451. The reversal of 7522443 is 3442257.

It is not a de Polignac number, because 7522443 - 2² = 7522439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 278609 = 7522443 / (7 + 5 + 2 + 2 + 4 + 4 + 3).

It is a d-powerful number, because it can be written as 7⁶ + 5³ + 2¹⁹ + 2²¹ + 4 + 4⁴ + 3¹⁴ .

7522443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7522453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139278 + ... + 139331.

It is an arithmetic number, because the mean of its divisors is an integer number (1393050).

Almost surely, 2^7522443 is an apocalyptic number.

7522443 is a deficient number, since it is larger than the sum of its proper divisors (3621957).

7522443 is a wasteful number, since it uses less digits than its factorization.

7522443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278618 (or 278612 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 7522443 is about 2742.7072392073. The cubic root of 7522443 is about 195.9384351275.

The spelling of 7522443 in words is "seven million, five hundred twenty-two thousand, four hundred forty-three".