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30053075 = 5213891039
BaseRepresentation
bin111001010100…
…1001011010011
32002112212001212
41302221023103
530143144300
62552050335
7513306203
oct162511323
962485055
1030053075
1115a67358
12a0939ab
1362c31b0
143dc4403
152989935
hex1ca92d3

30053075 has 24 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 21922560.

The previous prime is 30053063. The next prime is 30053081. The reversal of 30053075 is 57035003.

It is not a de Polignac number, because 30053075 - 222 = 25858771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30053075.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28406 + ... + 29444.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 230053075 is an apocalyptic number.

30053075 is a deficient number, since it is larger than the sum of its proper divisors (10569325).

30053075 is a wasteful number, since it uses less digits than its factorization.

30053075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 23.

The square root of 30053075 is about 5482.0684964710. The cubic root of 30053075 is about 310.9063830464.

Adding to 30053075 its reverse (57035003), we get a palindrome (87088078).

The spelling of 30053075 in words is "thirty million, fifty-three thousand, seventy-five".

Divisors: 1 5 13 25 65 89 325 445 1039 1157 2225 5195 5785 13507 25975 28925 67535 92471 337675 462355 1202123 2311775 6010615 30053075