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254081 = 2311047
BaseRepresentation
bin111110000010000001
3110220112102
4332002001
531112311
65240145
72105522
oct760201
9426472
10254081
11163993
12103055
138b859
1468849
155043b
hex3e081

254081 has 4 divisors (see below), whose sum is σ = 265152. Its totient is φ = 243012.

The previous prime is 254071. The next prime is 254083. The reversal of 254081 is 180452.

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 a de Polignac number, because none of the positive numbers 2k-254081 is a prime.

It is a super-2 number, since 2×2540812 = 129114309122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254083) 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, 5501 + ... + 5546.

It is an arithmetic number, because the mean of its divisors is an integer number (66288).

2254081 is an apocalyptic number.

It is an amenable number.

254081 is a deficient number, since it is larger than the sum of its proper divisors (11071).

254081 is a wasteful number, since it uses less digits than its factorization.

254081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11070.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 254081 is about 504.0644800023. The cubic root of 254081 is about 63.3369865544.

The spelling of 254081 in words is "two hundred fifty-four thousand, eighty-one".

Divisors: 1 23 11047 254081