8540457 has 8 divisors (see below), whose sum is σ = 11419776. Its totient is φ = 5677392.

The previous prime is 8540431. The next prime is 8540461. The reversal of 8540457 is 7540458.

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

It is not a de Polignac number, because 8540457 - 2⁶ = 8540393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8544457) 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, 2778 + ... + 4979.

It is an arithmetic number, because the mean of its divisors is an integer number (1427472).

Almost surely, 2^8540457 is an apocalyptic number.

It is an amenable number.

8540457 is a deficient number, since it is larger than the sum of its proper divisors (2879319).

8540457 is a wasteful number, since it uses less digits than its factorization.

8540457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 8540457 is about 2922.4060292848. The cubic root of 8540457 is about 204.4060300405.

Subtracting from 8540457 its reverse (7540458), we obtain a palindrome (999999).

The spelling of 8540457 in words is "eight million, five hundred forty thousand, four hundred fifty-seven".