7258213 has 4 divisors (see below), whose sum is σ = 7264908. Its totient is φ = 7251520.

The previous prime is 7258211. The next prime is 7258243. The reversal of 7258213 is 3128527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3128527 = 17 ⋅184031.

It can be written as a sum of positive squares in 2 ways, for example, as 4941729 + 2316484 = 2223^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 7258213 - 2¹ = 7258211 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 (7258211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306 + ... + 4027.

It is an arithmetic number, because the mean of its divisors is an integer number (1816227).

Almost surely, 2^7258213 is an apocalyptic number.

It is an amenable number.

7258213 is a deficient number, since it is larger than the sum of its proper divisors (6695).

7258213 is a wasteful number, since it uses less digits than its factorization.

7258213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694.

The product of its digits is 3360, while the sum is 28.

The square root of 7258213 is about 2694.1070877009. The cubic root of 7258213 is about 193.6168883823.

It can be divided in two parts, 72 and 58213, that added together give a palindrome (58285).

The spelling of 7258213 in words is "seven million, two hundred fifty-eight thousand, two hundred thirteen".