7257229 has 4 divisors (see below), whose sum is σ = 8293984. Its totient is φ = 6220476.

The previous prime is 7257227. The next prime is 7257241. The reversal of 7257229 is 9227527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7257229 - 2¹ = 7257227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7257194 and 7257203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7257227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518367 + ... + 518380.

It is an arithmetic number, because the mean of its divisors is an integer number (2073496).

Almost surely, 2^7257229 is an apocalyptic number.

It is an amenable number.

7257229 is a deficient number, since it is larger than the sum of its proper divisors (1036755).

7257229 is a wasteful number, since it uses less digits than its factorization.

7257229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036754.

The product of its digits is 17640, while the sum is 34.

The square root of 7257229 is about 2693.9244607078. The cubic root of 7257229 is about 193.6081384035.

The spelling of 7257229 in words is "seven million, two hundred fifty-seven thousand, two hundred twenty-nine".