542551565 has 32 divisors (see below), whose sum is σ = 682577280. Its totient is φ = 413670400.

The previous prime is 542551547. The next prime is 542551567. The reversal of 542551565 is 565155245.

It is not a de Polignac number, because 542551565 - 2⁶ = 542551501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542551567) 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 31 ways as a sum of consecutive naturals, for example, 2389982 + ... + 2390208.

It is an arithmetic number, because the mean of its divisors is an integer number (21330540).

Almost surely, 2^542551565 is an apocalyptic number.

It is an amenable number.

542551565 is a deficient number, since it is larger than the sum of its proper divisors (140025715).

542551565 is a wasteful number, since it uses less digits than its factorization.

542551565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 150000, while the sum is 38.

The square root of 542551565 is about 23292.7363141388. The cubic root of 542551565 is about 815.6058651236.

The spelling of 542551565 in words is "five hundred forty-two million, five hundred fifty-one thousand, five hundred sixty-five".