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164941 = 723563
BaseRepresentation
bin101000010001001101
322101020221
4220101031
520234231
63311341
71254610
oct502115
9271227
10164941
11102a17
127b551
135a0ca
1444177
1533d11
hex2844d

164941 has 4 divisors (see below), whose sum is σ = 188512. Its totient is φ = 141372.

The previous prime is 164911. The next prime is 164953. The reversal of 164941 is 149461.

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: 149461 = 1311497.

It is not a de Polignac number, because 164941 - 29 = 164429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11775 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (47128).

2164941 is an apocalyptic number.

It is an amenable number.

164941 is a deficient number, since it is larger than the sum of its proper divisors (23571).

164941 is an equidigital number, since it uses as much as digits as its factorization.

164941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23570.

The product of its digits is 864, while the sum is 25.

The square root of 164941 is about 406.1292897588. The cubic root of 164941 is about 54.8415272988.

The spelling of 164941 in words is "one hundred sixty-four thousand, nine hundred forty-one".

Divisors: 1 7 23563 164941