542485531 has 4 divisors (see below), whose sum is σ = 619983472. Its totient is φ = 464987592.

The previous prime is 542485501. The next prime is 542485543. The reversal of 542485531 is 135584245.

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 542485531 - 2⁷ = 542485403 is a prime.

It is a super-2 number, since 2×542485531² = 588581102688703922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542485501) 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, 38748960 + ... + 38748973.

It is an arithmetic number, because the mean of its divisors is an integer number (154995868).

Almost surely, 2^542485531 is an apocalyptic number.

542485531 is a deficient number, since it is larger than the sum of its proper divisors (77497941).

542485531 is an equidigital number, since it uses as much as digits as its factorization.

542485531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77497940.

The product of its digits is 96000, while the sum is 37.

The square root of 542485531 is about 23291.3187904850. The cubic root of 542485531 is about 815.5727746266.

The spelling of 542485531 in words is "five hundred forty-two million, four hundred eighty-five thousand, five hundred thirty-one".