7123522 has 12 divisors (see below), whose sum is σ = 12429990. Its totient is φ = 3052896.

The previous prime is 7123513. The next prime is 7123547. The reversal of 7123522 is 2253217.

It can be written as a sum of positive squares in only one way, i.e., 6964321 + 159201 = 2639^2 + 399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7123493 and 7123502.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36247 + ... + 36442.

Almost surely, 2^7123522 is an apocalyptic number.

7123522 is a deficient number, since it is larger than the sum of its proper divisors (5306468).

7123522 is a wasteful number, since it uses less digits than its factorization.

7123522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72705 (or 72698 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 7123522 is about 2668.9926938828. The cubic root of 7123522 is about 192.4117501825.

Adding to 7123522 its reverse (2253217), we get a palindrome (9376739).

The spelling of 7123522 in words is "seven million, one hundred twenty-three thousand, five hundred twenty-two".