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30055142545 = 56011028509
BaseRepresentation
bin11011111111011011…
…010001010010010001
32212120121001102201121
4123333123101102101
5443023104030140
621450202002241
72112536332201
oct337733212221
985517042647
1030055142545
111182338748a
1259a94a6381
132aac93111c
1416518c0401
15bad8bc64a
hex6ff6d1491

30055142545 has 4 divisors (see below), whose sum is σ = 36066171060. Its totient is φ = 24044114032.

The previous prime is 30055142527. The next prime is 30055142561. The reversal of 30055142545 is 54524155003.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10862642176 + 19192500369 = 104224^2 + 138537^2 .

It is a cyclic number.

It is not a de Polignac number, because 30055142545 - 217 = 30055011473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30055142545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005514250 + ... + 3005514259.

It is an arithmetic number, because the mean of its divisors is an integer number (9016542765).

Almost surely, 230055142545 is an apocalyptic number.

It is an amenable number.

30055142545 is a deficient number, since it is larger than the sum of its proper divisors (6011028515).

30055142545 is an equidigital number, since it uses as much as digits as its factorization.

30055142545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011028514.

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 30055142545 its reverse (54524155003), we get a palindrome (84579297548).

The spelling of 30055142545 in words is "thirty billion, fifty-five million, one hundred forty-two thousand, five hundred forty-five".

Divisors: 1 5 6011028509 30055142545