7457522 has 6 divisors (see below), whose sum is σ = 11192079. Its totient is φ = 3726830.

The previous prime is 7457503. The next prime is 7457561. The reversal of 7457522 is 2257547.

It can be written as a sum of positive squares in only one way, i.e., 3728761 + 3728761 = 1931^2 + 1931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1931.

It is a super-2 number, since 2×7457522² = 111229268760968, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2897 + ... + 4827.

Almost surely, 2^7457522 is an apocalyptic number.

7457522 is a deficient number, since it is larger than the sum of its proper divisors (3734557).

7457522 is an frugal number, since it uses more digits than its factorization.

7457522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864 (or 1933 counting only the distinct ones).

The product of its digits is 19600, while the sum is 32.

The square root of 7457522 is about 2730.8463889424. The cubic root of 7457522 is about 195.3731360788.

Multiplying 7457522 by its sum of digits (32), we get a square (238640704 = 15448²).

The spelling of 7457522 in words is "seven million, four hundred fifty-seven thousand, five hundred twenty-two".