542567549 has 4 divisors (see below), whose sum is σ = 560069760. Its totient is φ = 525065340.

The previous prime is 542567533. The next prime is 542567567. The reversal of 542567549 is 945765245.

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 not a de Polignac number, because 542567549 - 2⁴ = 542567533 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 (542567449) 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, 8751059 + ... + 8751120.

It is an arithmetic number, because the mean of its divisors is an integer number (140017440).

Almost surely, 2^542567549 is an apocalyptic number.

It is an amenable number.

542567549 is a deficient number, since it is larger than the sum of its proper divisors (17502211).

542567549 is a wasteful number, since it uses less digits than its factorization.

542567549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502210.

The product of its digits is 1512000, while the sum is 47.

The square root of 542567549 is about 23293.0794228672. The cubic root of 542567549 is about 815.6138745105.

The spelling of 542567549 in words is "five hundred forty-two million, five hundred sixty-seven thousand, five hundred forty-nine".