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193052005 = 538610401
BaseRepresentation
bin10111000000110…
…11110101100101
3111110021001120021
423200123311211
5343410131010
631053435141
74532625556
oct1340336545
9443231507
10193052005
1199a77913
125479bab1
1330cc3973
141b8d432d
1511e358da
hexb81bd65

193052005 has 4 divisors (see below), whose sum is σ = 231662412. Its totient is φ = 154441600.

The previous prime is 193052003. The next prime is 193052021. The reversal of 193052005 is 500250391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500250391 = 2321750017.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 144024001 = 7002^2 + 12001^2 .

It is not a de Polignac number, because 193052005 - 21 = 193052003 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 (193052003) 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, 19305196 + ... + 19305205.

It is an arithmetic number, because the mean of its divisors is an integer number (57915603).

Almost surely, 2193052005 is an apocalyptic number.

It is an amenable number.

193052005 is a deficient number, since it is larger than the sum of its proper divisors (38610407).

193052005 is an equidigital number, since it uses as much as digits as its factorization.

193052005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38610406.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 193052005 is about 13894.3155642874. The cubic root of 193052005 is about 577.9515580224.

It can be divided in two parts, 1930 and 52005, that added together give a palindrome (53935).

The spelling of 193052005 in words is "one hundred ninety-three million, fifty-two thousand, five".

Divisors: 1 5 38610401 193052005