7157229 has 8 divisors (see below), whose sum is σ = 9872160. Its totient is φ = 4606896.

The previous prime is 7157219. The next prime is 7157237. The reversal of 7157229 is 9227517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7157229 - 2⁸ = 7156973 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7157229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41047 + ... + 41220.

It is an arithmetic number, because the mean of its divisors is an integer number (1234020).

Almost surely, 2^7157229 is an apocalyptic number.

It is an amenable number.

7157229 is a deficient number, since it is larger than the sum of its proper divisors (2714931).

7157229 is a wasteful number, since it uses less digits than its factorization.

7157229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82299.

The product of its digits is 8820, while the sum is 33.

The square root of 7157229 is about 2675.2997962845. The cubic root of 7157229 is about 192.7147566699.

The spelling of 7157229 in words is "seven million, one hundred fifty-seven thousand, two hundred twenty-nine".