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30054559 = 42177127
BaseRepresentation
bin111001010100…
…1100010011111
32002112221002211
41302221202133
530143221214
62552101251
7513313423
oct162514237
962487084
1030054559
1115a68487
12a094827
1362c3a82
143dc4b83
15298a0c4
hex1ca989f

30054559 has 4 divisors (see below), whose sum is σ = 30065904. Its totient is φ = 30043216.

The previous prime is 30054533. The next prime is 30054569. The reversal of 30054559 is 95545003.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95545003 = 113845531.

It is a cyclic number.

It is not a de Polignac number, because 30054559 - 211 = 30052511 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30054559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30054569) 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, 654 + ... + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (7516476).

Almost surely, 230054559 is an apocalyptic number.

30054559 is a deficient number, since it is larger than the sum of its proper divisors (11345).

30054559 is an equidigital number, since it uses as much as digits as its factorization.

30054559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 30054559 is about 5482.2038451703. The cubic root of 30054559 is about 310.9115004093.

The spelling of 30054559 in words is "thirty million, fifty-four thousand, five hundred fifty-nine".

Divisors: 1 4217 7127 30054559