7257089 has 8 divisors (see below), whose sum is σ = 8332800. Its totient is φ = 6191136.

The previous prime is 7257083. The next prime is 7257091. The reversal of 7257089 is 9807527.

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

It is not a de Polignac number, because 7257089 - 2⁴ = 7257073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7257083) 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 7 ways as a sum of consecutive naturals, for example, 764 + ... + 3885.

It is an arithmetic number, because the mean of its divisors is an integer number (1041600).

Almost surely, 2^7257089 is an apocalyptic number.

It is an amenable number.

7257089 is a deficient number, since it is larger than the sum of its proper divisors (1075711).

7257089 is a wasteful number, since it uses less digits than its factorization.

7257089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 7257089 is about 2693.8984761865. The cubic root of 7257089 is about 193.6068934236.

The spelling of 7257089 in words is "seven million, two hundred fifty-seven thousand, eighty-nine".