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58621 = 31261
BaseRepresentation
bin1110010011111101
32222102011
432103331
53333441
61131221
7332623
oct162375
988364
1058621
1140052
1229b11
13208b4
1417513
1512581
hexe4fd

58621 has 6 divisors (see below), whose sum is σ = 61566. Its totient is φ = 55800.

The previous prime is 58613. The next prime is 58631. The reversal of 58621 is 12685.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34596 + 24025 = 186^2 + 155^2 .

It is not a de Polignac number, because 58621 - 23 = 58613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 58592 and 58601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58601) 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 5 ways as a sum of consecutive naturals, for example, 931 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (10261).

258621 is an apocalyptic number.

It is an amenable number.

58621 is a deficient number, since it is larger than the sum of its proper divisors (2945).

58621 is an equidigital number, since it uses as much as digits as its factorization.

58621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 92 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 58621 is about 242.1177399531. The cubic root of 58621 is about 38.8464265174.

The spelling of 58621 in words is "fifty-eight thousand, six hundred twenty-one".

Divisors: 1 31 61 961 1891 58621