540457 has 4 divisors (see below), whose sum is σ = 545616. Its totient is φ = 535300.

The previous prime is 540437. The next prime is 540461. The reversal of 540457 is 754045.

540457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540437) 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, 2419 + ... + 2632.

It is an arithmetic number, because the mean of its divisors is an integer number (136404).

2⁵⁴⁰⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

540457 is a deficient number, since it is larger than the sum of its proper divisors (5159).

540457 is a wasteful number, since it uses less digits than its factorization.

540457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 540457 is about 735.1578061886. The cubic root of 540457 is about 81.4554940363.

The spelling of 540457 in words is "five hundred forty thousand, four hundred fifty-seven".