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195001 = 1091789
BaseRepresentation
bin101111100110111001
3100220111021
4233212321
522220001
64102441
71441342
oct574671
9326437
10195001
11123564
1294a21
136a9b1
14510c9
153cba1
hex2f9b9

195001 has 4 divisors (see below), whose sum is σ = 196900. Its totient is φ = 193104.

The previous prime is 194989. The next prime is 195023. The reversal of 195001 is 100591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164025 + 30976 = 405^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 195001 - 217 = 63929 is a prime.

It is a pancake number, because a pancake can be divided into 195001 parts by 624 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195071) 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, 786 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (49225).

2195001 is an apocalyptic number.

It is an amenable number.

195001 is a deficient number, since it is larger than the sum of its proper divisors (1899).

195001 is a wasteful number, since it uses less digits than its factorization.

195001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 195001 is about 441.5891755920. The cubic root of 195001 is about 57.9889991026.

Adding to 195001 its reverse (100591), we get a palindrome (295592).

The spelling of 195001 in words is "one hundred ninety-five thousand, one".

Divisors: 1 109 1789 195001