7540493 has 4 divisors (see below), whose sum is σ = 7800540. Its totient is φ = 7280448.

The previous prime is 7540459. The next prime is 7540499. The reversal of 7540493 is 3940457.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2866249 + 4674244 = 1693^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 7540493 - 2⁸ = 7540237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129980 + ... + 130037.

It is an arithmetic number, because the mean of its divisors is an integer number (1950135).

Almost surely, 2^7540493 is an apocalyptic number.

It is an amenable number.

7540493 is a deficient number, since it is larger than the sum of its proper divisors (260047).

7540493 is a wasteful number, since it uses less digits than its factorization.

7540493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260046.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 7540493 is about 2745.9958120871. The cubic root of 7540493 is about 196.0950271537.

The spelling of 7540493 in words is "seven million, five hundred forty thousand, four hundred ninety-three".