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45091 = 67673
BaseRepresentation
bin1011000000100011
32021212001
423000203
52420331
6544431
7245314
oct130043
967761
1045091
1130972
1222117
13176a7
141260b
15d561
hexb023

45091 has 4 divisors (see below), whose sum is σ = 45832. Its totient is φ = 44352.

The previous prime is 45083. The next prime is 45119. The reversal of 45091 is 19054.

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

It is a cyclic number.

It is not a de Polignac number, because 45091 - 23 = 45083 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (45061) 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, 270 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (11458).

245091 is an apocalyptic number.

45091 is a deficient number, since it is larger than the sum of its proper divisors (741).

45091 is an equidigital number, since it uses as much as digits as its factorization.

45091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 45091 is about 212.3464150863. The cubic root of 45091 is about 35.5928929970.

The spelling of 45091 in words is "forty-five thousand, ninety-one".

Divisors: 1 67 673 45091