7545457 has 4 divisors (see below), whose sum is σ = 7553700. Its totient is φ = 7537216.

The previous prime is 7545443. The next prime is 7545463.

7545457 is nontrivially palindromic in base 10.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 3549456 + 3996001 = 1884^2 + 1999^2 .

It is a cyclic number.

It is not a de Polignac number, because 7545457 - 2¹¹ = 7543409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7545487) 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, 2548 + ... + 4645.

It is an arithmetic number, because the mean of its divisors is an integer number (1888425).

Almost surely, 2^7545457 is an apocalyptic number.

It is an amenable number.

7545457 is a deficient number, since it is larger than the sum of its proper divisors (8243).

7545457 is a wasteful number, since it uses less digits than its factorization.

7545457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242.

The product of its digits is 98000, while the sum is 37.

The square root of 7545457 is about 2746.8995249190. The cubic root of 7545457 is about 196.1380483102.

The spelling of 7545457 in words is "seven million, five hundred forty-five thousand, four hundred fifty-seven".