7540257 has 16 divisors (see below), whose sum is σ = 10471680. Its totient is φ = 4822272.

The previous prime is 7540241. The next prime is 7540277. The reversal of 7540257 is 7520457.

7540257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7540257 - 2⁴ = 7540241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7540237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6969 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (654480).

Almost surely, 2^7540257 is an apocalyptic number.

It is an amenable number.

7540257 is a deficient number, since it is larger than the sum of its proper divisors (2931423).

7540257 is a wasteful number, since it uses less digits than its factorization.

7540257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 7540257 is about 2745.9528400903. The cubic root of 7540257 is about 196.0929813587.

The spelling of 7540257 in words is "seven million, five hundred forty thousand, two hundred fifty-seven".