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164201217 = 354733739
BaseRepresentation
bin10011100100110…
…00001100000001
3102102222021201120
421302120030001
5314013414332
624143222453
74032454515
oct1162301401
9372867646
10164201217
1184761894
1246ba7a29
1328031aab
1417b44145
15e63732c
hex9c98301

164201217 has 4 divisors (see below), whose sum is σ = 218934960. Its totient is φ = 109467476.

The previous prime is 164201207. The next prime is 164201231. The reversal of 164201217 is 712102461.

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.

It is a cyclic number.

It is not a de Polignac number, because 164201217 - 210 = 164200193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164201207) 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, 27366867 + ... + 27366872.

It is an arithmetic number, because the mean of its divisors is an integer number (54733740).

Almost surely, 2164201217 is an apocalyptic number.

It is an amenable number.

164201217 is a deficient number, since it is larger than the sum of its proper divisors (54733743).

164201217 is an equidigital number, since it uses as much as digits as its factorization.

164201217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54733742.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 164201217 is about 12814.1022705455. The cubic root of 164201217 is about 547.5941382299.

Adding to 164201217 its reverse (712102461), we get a palindrome (876303678).

The spelling of 164201217 in words is "one hundred sixty-four million, two hundred one thousand, two hundred seventeen".

Divisors: 1 3 54733739 164201217