7243557 has 8 divisors (see below), whose sum is σ = 9717984. Its totient is φ = 4799088.

The previous prime is 7243549. The next prime is 7243573. The reversal of 7243557 is 7553427.

7243557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7243557 - 2³ = 7243549 is a prime.

7243557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243517) 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, 6918 + ... + 7895.

It is an arithmetic number, because the mean of its divisors is an integer number (1214748).

Almost surely, 2^7243557 is an apocalyptic number.

It is an amenable number.

7243557 is a deficient number, since it is larger than the sum of its proper divisors (2474427).

7243557 is a wasteful number, since it uses less digits than its factorization.

7243557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979.

The product of its digits is 29400, while the sum is 33.

The square root of 7243557 is about 2691.3857025703. The cubic root of 7243557 is about 193.4864815720.

The spelling of 7243557 in words is "seven million, two hundred forty-three thousand, five hundred fifty-seven".