543457 has 4 divisors (see below), whose sum is σ = 572080. Its totient is φ = 514836.

The previous prime is 543427. The next prime is 543463. The reversal of 543457 is 754345.

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, and also an emirpimes, since its reverse is a distinct semiprime: 754345 = 5 ⋅150869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543407) 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, 14283 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (143020).

2⁵⁴³⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

543457 is a deficient number, since it is larger than the sum of its proper divisors (28623).

543457 is a wasteful number, since it uses less digits than its factorization.

543457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28622.

The product of its digits is 8400, while the sum is 28.

The square root of 543457 is about 737.1953608101. The cubic root of 543457 is about 81.6059319826.

It can be divided in two parts, 543 and 457, that added together give a cube (1000 = 10³).

The spelling of 543457 in words is "five hundred forty-three thousand, four hundred fifty-seven".