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61058089 = 68298941
BaseRepresentation
bin1110100011101…
…0110000101001
311020220001221201
43220322300221
5111112324324
610020404201
71340661631
oct350726051
9136801851
1061058089
1131513934
1218546661
13c85a761
1481756c1
155561444
hex3a3ac29

61058089 has 4 divisors (see below), whose sum is σ = 61073860. Its totient is φ = 61042320.

The previous prime is 61058071. The next prime is 61058111. The reversal of 61058089 is 98085016.

61058089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 36723600 + 24334489 = 6060^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 61058089 - 211 = 61056041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61058489) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2359 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (15268465).

Almost surely, 261058089 is an apocalyptic number.

It is an amenable number.

61058089 is a deficient number, since it is larger than the sum of its proper divisors (15771).

61058089 is an equidigital number, since it uses as much as digits as its factorization.

61058089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15770.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 61058089 is about 7813.9675581615. The cubic root of 61058089 is about 393.7746334131.

The spelling of 61058089 in words is "sixty-one million, fifty-eight thousand, eighty-nine".

Divisors: 1 6829 8941 61058089