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542888181 = 32115483719
BaseRepresentation
bin100000010110111…
…101000011110101
31101211112120120200
4200112331003311
52102434410211
6125511551113
716311321243
oct4026750365
91354476520
10542888181
1125949aa20
1213198b499
1388620414
145215b793
15329dab56
hex205bd0f5

542888181 has 12 divisors (see below), whose sum is σ = 855460320. Its totient is φ = 329023080.

The previous prime is 542888173. The next prime is 542888209. The reversal of 542888181 is 181888245.

542888181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 542888181 - 23 = 542888173 is a prime.

It is a super-2 number, since 2×5428881812 = 589455154138977522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542888141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2741761 + ... + 2741958.

It is an arithmetic number, because the mean of its divisors is an integer number (71288360).

Almost surely, 2542888181 is an apocalyptic number.

It is an amenable number.

542888181 is a deficient number, since it is larger than the sum of its proper divisors (312572139).

542888181 is a wasteful number, since it uses less digits than its factorization.

542888181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483736 (or 5483733 counting only the distinct ones).

The product of its digits is 163840, while the sum is 45.

The square root of 542888181 is about 23299.9609656325. The cubic root of 542888181 is about 815.7745060678.

The spelling of 542888181 in words is "five hundred forty-two million, eight hundred eighty-eight thousand, one hundred eighty-one".

Divisors: 1 3 9 11 33 99 5483719 16451157 49353471 60320909 180962727 542888181