7315522 has 4 divisors (see below), whose sum is σ = 10973286. Its totient is φ = 3657760.

The previous prime is 7315499. The next prime is 7315543. The reversal of 7315522 is 2255137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2255137 = 191 ⋅11807.

It can be written as a sum of positive squares in only one way, i.e., 6395841 + 919681 = 2529^2 + 959^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828879 + ... + 1828882.

Almost surely, 2^7315522 is an apocalyptic number.

7315522 is a deficient number, since it is larger than the sum of its proper divisors (3657764).

7315522 is a wasteful number, since it uses less digits than its factorization.

7315522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657763.

The product of its digits is 2100, while the sum is 25.

The square root of 7315522 is about 2704.7221668778. The cubic root of 7315522 is about 194.1251362565.

The spelling of 7315522 in words is "seven million, three hundred fifteen thousand, five hundred twenty-two".