542655081 has 6 divisors (see below), whose sum is σ = 783835130. Its totient is φ = 361770048.

The previous prime is 542655073. The next prime is 542655097. The reversal of 542655081 is 180556245.

542655081 is a `hidden beast` number, since 5 + 4 + 26 + 550 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 506655081 + 36000000 = 22509^2 + 6000^2 .

It is not a de Polignac number, because 542655081 - 2³ = 542655073 is a prime.

It is a super-2 number, since 2×542655081² = 588949073870233122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542659081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30147496 + ... + 30147513.

Almost surely, 2^542655081 is an apocalyptic number.

It is an amenable number.

542655081 is a deficient number, since it is larger than the sum of its proper divisors (241180049).

542655081 is a wasteful number, since it uses less digits than its factorization.

542655081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60295015 (or 60295012 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 542655081 is about 23294.9582742704. The cubic root of 542655081 is about 815.6577329357.

The spelling of 542655081 in words is "five hundred forty-two million, six hundred fifty-five thousand, eighty-one".