7222149 has 16 divisors (see below), whose sum is σ = 11672640. Its totient is φ = 4376880.

The previous prime is 7222133. The next prime is 7222153. The reversal of 7222149 is 9412227.

7222149 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7222149 - 2⁴ = 7222133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11862 + ... + 12455.

It is an arithmetic number, because the mean of its divisors is an integer number (729540).

Almost surely, 2^7222149 is an apocalyptic number.

It is an amenable number.

7222149 is a deficient number, since it is larger than the sum of its proper divisors (4450491).

7222149 is a wasteful number, since it uses less digits than its factorization.

7222149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24337 (or 24331 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7222149 is about 2687.4056262500. The cubic root of 7222149 is about 193.2956800103.

The spelling of 7222149 in words is "seven million, two hundred twenty-two thousand, one hundred forty-nine".