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58143805 = 511628761
BaseRepresentation
bin1101110111001…
…1010000111101
311001102000022021
43131303100331
5104341100210
65434120141
71304133316
oct335632075
9131360267
1058143805
112a903335
1217580051
13c07a125
147a1760d
155187bda
hex377343d

58143805 has 4 divisors (see below), whose sum is σ = 69772572. Its totient is φ = 46515040.

The previous prime is 58143803. The next prime is 58143821. The reversal of 58143805 is 50834185.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50834185 = 510166837.

It can be written as a sum of positive squares in 2 ways, for example, as 37295449 + 20848356 = 6107^2 + 4566^2 .

It is not a de Polignac number, because 58143805 - 21 = 58143803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58143803) 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, 5814376 + ... + 5814385.

It is an arithmetic number, because the mean of its divisors is an integer number (17443143).

Almost surely, 258143805 is an apocalyptic number.

It is an amenable number.

58143805 is a deficient number, since it is larger than the sum of its proper divisors (11628767).

58143805 is a wasteful number, since it uses less digits than its factorization.

58143805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628766.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 58143805 is about 7625.2085217389. The cubic root of 58143805 is about 387.4073146345.

The spelling of 58143805 in words is "fifty-eight million, one hundred forty-three thousand, eight hundred five".

Divisors: 1 5 11628761 58143805