7445722 has 4 divisors (see below), whose sum is σ = 11168586. Its totient is φ = 3722860.

The previous prime is 7445719. The next prime is 7445729. The reversal of 7445722 is 2275447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6869641 + 576081 = 2621^2 + 759^2 .

It is a super-2 number, since 2×7445722² = 110877552202568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (7445729) by changing a digit.

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 as a sum of consecutive naturals, namely, 1861429 + ... + 1861432.

Almost surely, 2^7445722 is an apocalyptic number.

7445722 is a deficient number, since it is larger than the sum of its proper divisors (3722864).

7445722 is a wasteful number, since it uses less digits than its factorization.

7445722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722863.

The product of its digits is 15680, while the sum is 31.

The square root of 7445722 is about 2728.6850312925. The cubic root of 7445722 is about 195.2700357005.

It can be divided in two parts, 74 and 45722, that added together give a square (45796 = 214²).

The spelling of 7445722 in words is "seven million, four hundred forty-five thousand, seven hundred twenty-two".