7243591 has 4 divisors (see below), whose sum is σ = 7493400. Its totient is φ = 6993784.

The previous prime is 7243583. The next prime is 7243627. The reversal of 7243591 is 1953427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7243591 - 2³ = 7243583 is a prime.

It is a super-2 number, since 2×7243591² = 104939221150562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124861 + ... + 124918.

It is an arithmetic number, because the mean of its divisors is an integer number (1873350).

Almost surely, 2^7243591 is an apocalyptic number.

7243591 is a deficient number, since it is larger than the sum of its proper divisors (249809).

7243591 is a wasteful number, since it uses less digits than its factorization.

7243591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249808.

The product of its digits is 7560, while the sum is 31.

The square root of 7243591 is about 2691.3920190117. The cubic root of 7243591 is about 193.4867843022.

The spelling of 7243591 in words is "seven million, two hundred forty-three thousand, five hundred ninety-one".