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207157101 = 3431605869
BaseRepresentation
bin11000101100011…
…11011101101101
3112102210200010020
430112033131231
5411013011401
632320032353
75063543364
oct1426173555
9472720106
10207157101
11a6a31218
12594626b9
1333bc1b88
141d7267db
15132bed36
hexc58f76d

207157101 has 8 divisors (see below), whose sum is σ = 282633120. Its totient is φ = 134892912.

The previous prime is 207157091. The next prime is 207157147. The reversal of 207157101 is 101751702.

It is a happy number.

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

It is not a de Polignac number, because 207157101 - 221 = 205059949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207157151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802806 + ... + 803063.

It is an arithmetic number, because the mean of its divisors is an integer number (35329140).

Almost surely, 2207157101 is an apocalyptic number.

It is an amenable number.

207157101 is a deficient number, since it is larger than the sum of its proper divisors (75476019).

207157101 is a wasteful number, since it uses less digits than its factorization.

207157101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605915.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 207157101 is about 14392.9531716045. The cubic root of 207157101 is about 591.6977823835.

The spelling of 207157101 in words is "two hundred seven million, one hundred fifty-seven thousand, one hundred one".

Divisors: 1 3 43 129 1605869 4817607 69052367 207157101