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30025057 = 471374663
BaseRepresentation
bin111001010001…
…0010101100001
32002111102122011
41302202111201
530141300212
62551312521
7513131416
oct162422541
962442564
1030025057
1115a482a7
12a07b741
1362b350a
143db810d
1529814a7
hex1ca2561

30025057 has 8 divisors (see below), whose sum is σ = 30894336. Its totient is φ = 29165472.

The previous prime is 30025049. The next prime is 30025067. The reversal of 30025057 is 75052003.

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 30025057 - 23 = 30025049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30025007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4108 + ... + 8770.

It is an arithmetic number, because the mean of its divisors is an integer number (3861792).

Almost surely, 230025057 is an apocalyptic number.

It is an amenable number.

30025057 is a deficient number, since it is larger than the sum of its proper divisors (869279).

30025057 is a wasteful number, since it uses less digits than its factorization.

30025057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 30025057 is about 5479.5124783141. The cubic root of 30025057 is about 310.8097353270.

The spelling of 30025057 in words is "thirty million, twenty-five thousand, fifty-seven".

Divisors: 1 47 137 4663 6439 219161 638831 30025057