7157213 has 8 divisors (see below), whose sum is σ = 8207040. Its totient is φ = 6114240.

The previous prime is 7157201. The next prime is 7157219. The reversal of 7157213 is 3127517.

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

It is a cyclic number.

It is not a de Polignac number, because 7157213 - 2¹² = 7153117 is a prime.

It is a Duffinian number.

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, 773 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (1025880).

Almost surely, 2^7157213 is an apocalyptic number.

It is an amenable number.

7157213 is a deficient number, since it is larger than the sum of its proper divisors (1049827).

7157213 is a wasteful number, since it uses less digits than its factorization.

7157213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427.

The product of its digits is 1470, while the sum is 26.

The square root of 7157213 is about 2675.2968059638. The cubic root of 7157213 is about 192.7146130651.

The spelling of 7157213 in words is "seven million, one hundred fifty-seven thousand, two hundred thirteen".