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545481543 = 3181827181
BaseRepresentation
bin100000100000110…
…110001101000111
31102000102100000010
4200200312031013
52104120402133
6130043321303
716342342125
oct4040661507
91360370003
10545481543
1125aa013a2
12132820233
138901a959
1452634915
1532d4e263
hex20836347

545481543 has 4 divisors (see below), whose sum is σ = 727308728. Its totient is φ = 363654360.

The previous prime is 545481527. The next prime is 545481551. The reversal of 545481543 is 345184545.

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

It is not a de Polignac number, because 545481543 - 24 = 545481527 is a prime.

It is a super-2 number, since 2×5454815432 = 595100227507321698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545481043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90913588 + ... + 90913593.

It is an arithmetic number, because the mean of its divisors is an integer number (181827182).

Almost surely, 2545481543 is an apocalyptic number.

545481543 is a deficient number, since it is larger than the sum of its proper divisors (181827185).

545481543 is a wasteful number, since it uses less digits than its factorization.

545481543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181827184.

The product of its digits is 192000, while the sum is 39.

The square root of 545481543 is about 23355.5463006113. The cubic root of 545481543 is about 817.0714206513.

The spelling of 545481543 in words is "five hundred forty-five million, four hundred eighty-one thousand, five hundred forty-three".

Divisors: 1 3 181827181 545481543