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30055513 = 294722051
BaseRepresentation
bin111001010100…
…1110001011001
32002112222102011
41302221301121
530143234023
62552105521
7513316255
oct162516131
962488364
1030055513
1115a69174
12a0952a1
1362c4337
143dc5265
15298a50d
hex1ca9c59

30055513 has 8 divisors (see below), whose sum is σ = 31754880. Its totient is φ = 28400400.

The previous prime is 30055499. The next prime is 30055517. The reversal of 30055513 is 31555003.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30055513 - 29 = 30055001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30055517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9663 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (3969360).

Almost surely, 230055513 is an apocalyptic number.

It is an amenable number.

30055513 is a deficient number, since it is larger than the sum of its proper divisors (1699367).

30055513 is a wasteful number, since it uses less digits than its factorization.

30055513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22127.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 30055513 is about 5482.2908532839. The cubic root of 30055513 is about 310.9147900537.

The spelling of 30055513 in words is "thirty million, fifty-five thousand, five hundred thirteen".

Divisors: 1 29 47 1363 22051 639479 1036397 30055513