7531222 has 4 divisors (see below), whose sum is σ = 11296836. Its totient is φ = 3765610.

The previous prime is 7531217. The next prime is 7531231. The reversal of 7531222 is 2221357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221357 = 127 ⋅17491.

It is a d-powerful number, because it can be written as 7⁸ + 5² + 3¹¹ + 1 + 2¹⁴ + 2¹⁹ + 2²⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 7531193 and 7531202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1882804 + ... + 1882807.

It is an arithmetic number, because the mean of its divisors is an integer number (2824209).

Almost surely, 2^7531222 is an apocalyptic number.

7531222 is a deficient number, since it is larger than the sum of its proper divisors (3765614).

7531222 is a wasteful number, since it uses less digits than its factorization.

7531222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765613.

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

The square root of 7531222 is about 2744.3071985476. The cubic root of 7531222 is about 196.0146282293.

Adding to 7531222 its reverse (2221357), we get a palindrome (9752579).

The spelling of 7531222 in words is "seven million, five hundred thirty-one thousand, two hundred twenty-two".