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58212917 = 78316131
BaseRepresentation
bin1101111000010…
…0001000110101
311001112112002222
43132010020311
5104400303132
65435412125
71304541650
oct336041065
9131475088
1058212917
112a950254
12175b4045
13c0a2719
147a34897
15519d412
hex3784235

58212917 has 4 divisors (see below), whose sum is σ = 66529056. Its totient is φ = 49896780.

The previous prime is 58212899. The next prime is 58212919. The reversal of 58212917 is 71921285.

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 a de Polignac number, because none of the positive numbers 2k-58212917 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 (58212919) 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, 4158059 + ... + 4158072.

It is an arithmetic number, because the mean of its divisors is an integer number (16632264).

Almost surely, 258212917 is an apocalyptic number.

It is an amenable number.

58212917 is a deficient number, since it is larger than the sum of its proper divisors (8316139).

58212917 is an equidigital number, since it uses as much as digits as its factorization.

58212917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316138.

The product of its digits is 10080, while the sum is 35.

The square root of 58212917 is about 7629.7389863612. The cubic root of 58212917 is about 387.5607496847.

The spelling of 58212917 in words is "fifty-eight million, two hundred twelve thousand, nine hundred seventeen".

Divisors: 1 7 8316131 58212917