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195715001 = 1271541063
BaseRepresentation
bin10111010101001…
…01111110111001
3111122021100111202
423222211332321
5400100340001
631230503545
74564356446
oct1352457671
9448240452
10195715001
11a0526639
1255664bb5
1331716ac1
141bdc89cd
15122ae96b
hexbaa5fb9

195715001 has 4 divisors (see below), whose sum is σ = 197256192. Its totient is φ = 194173812.

The previous prime is 195714989. The next prime is 195715019. The reversal of 195715001 is 100517591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100517591 = 599167809.

It is a cyclic number.

It is not a de Polignac number, because 195715001 - 210 = 195713977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195715021) 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, 770405 + ... + 770658.

It is an arithmetic number, because the mean of its divisors is an integer number (49314048).

Almost surely, 2195715001 is an apocalyptic number.

It is an amenable number.

195715001 is a deficient number, since it is larger than the sum of its proper divisors (1541191).

195715001 is a wasteful number, since it uses less digits than its factorization.

195715001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541190.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 195715001 is about 13989.8177615007. The cubic root of 195715001 is about 580.5968894820.

The spelling of 195715001 in words is "one hundred ninety-five million, seven hundred fifteen thousand, one".

Divisors: 1 127 1541063 195715001