542778527 has 4 divisors (see below), whose sum is σ = 542907960. Its totient is φ = 542649096.

The previous prime is 542778521. The next prime is 542778539. The reversal of 542778527 is 725877245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542778527 - 2⁶ = 542778463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542778521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58208 + ... + 66885.

It is an arithmetic number, because the mean of its divisors is an integer number (135726990).

Almost surely, 2^542778527 is an apocalyptic number.

542778527 is a deficient number, since it is larger than the sum of its proper divisors (129433).

542778527 is a wasteful number, since it uses less digits than its factorization.

542778527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129432.

The product of its digits is 1097600, while the sum is 47.

The square root of 542778527 is about 23297.6077527286. The cubic root of 542778527 is about 815.7195782673.

The spelling of 542778527 in words is "five hundred forty-two million, seven hundred seventy-eight thousand, five hundred twenty-seven".