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58042581 = 319347527
BaseRepresentation
bin1101110101101…
…0100011010101
311001012212110020
43131122203111
5104324330311
65432015353
71303232232
oct335324325
9131185406
1058042581
112a844283
1217531559
13c04302c
1479cc789
155167c06
hex375a8d5

58042581 has 4 divisors (see below), whose sum is σ = 77390112. Its totient is φ = 38695052.

The previous prime is 58042559. The next prime is 58042597. The reversal of 58042581 is 18524085.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 58042581 - 214 = 58026197 is a prime.

It is a super-2 number, since 2×580425812 = 6737882418283122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58042531) 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, 9673761 + ... + 9673766.

It is an arithmetic number, because the mean of its divisors is an integer number (19347528).

Almost surely, 258042581 is an apocalyptic number.

It is an amenable number.

58042581 is a deficient number, since it is larger than the sum of its proper divisors (19347531).

58042581 is a wasteful number, since it uses less digits than its factorization.

58042581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19347530.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 58042581 is about 7618.5681725637. The cubic root of 58042581 is about 387.1823683609.

It can be divided in two parts, 5804 and 2581, that added together give a triangular number (8385 = T129).

The spelling of 58042581 in words is "fifty-eight million, forty-two thousand, five hundred eighty-one".

Divisors: 1 3 19347527 58042581