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195481 = 11131367
BaseRepresentation
bin101111101110011001
3100221011001
4233232121
522223411
64105001
71442626
oct575631
9327131
10195481
11123960
1295161
136ac90
145134d
153cdc1
hex2fb99

195481 has 8 divisors (see below), whose sum is σ = 229824. Its totient is φ = 163920.

The previous prime is 195479. The next prime is 195493. The reversal of 195481 is 184591.

195481 = T183 + T184 + ... + T193.

It is a happy number.

It is the 181-st star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195481 - 21 = 195479 is a prime.

It is a super-2 number, since 2×1954812 = 76425642722, which contains 22 as substring.

It is a Duffinian number.

195481 is a modest number, since divided by 481 gives 195 as remainder.

It is not an unprimeable number, because it can be changed into a prime (195401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2195481 is an apocalyptic number.

195481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

195481 is a deficient number, since it is larger than the sum of its proper divisors (34343).

195481 is a wasteful number, since it uses less digits than its factorization.

195481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its digits is 1440, while the sum is 28.

The square root of 195481 is about 442.1323331312. The cubic root of 195481 is about 58.0365405890.

It can be divided in two parts, 195 and 481, that added together give a palindrome (676).

The spelling of 195481 in words is "one hundred ninety-five thousand, four hundred eighty-one".

Divisors: 1 11 13 143 1367 15037 17771 195481