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249080105 = 549816021
BaseRepresentation
bin11101101100010…
…10100100101001
3122100200120200002
432312022210221
51002231030410
640414352345
76113101031
oct1666124451
9570616602
10249080105
1111866562a
126b4bb6b5
133c7acaa1
142511a8c1
1516d017a5
hexed8a929

249080105 has 4 divisors (see below), whose sum is σ = 298896132. Its totient is φ = 199264080.

The previous prime is 249080099. The next prime is 249080129. The reversal of 249080105 is 501080942.

249080105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62047129 + 187032976 = 7877^2 + 13676^2 .

It is not a de Polignac number, because 249080105 - 216 = 249014569 is a prime.

It is a super-2 number, since 2×2490801052 = 124081797413622050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24908006 + ... + 24908015.

It is an arithmetic number, because the mean of its divisors is an integer number (74724033).

Almost surely, 2249080105 is an apocalyptic number.

It is an amenable number.

249080105 is a deficient number, since it is larger than the sum of its proper divisors (49816027).

249080105 is an equidigital number, since it uses as much as digits as its factorization.

249080105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49816026.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 249080105 is about 15782.2718580057. The cubic root of 249080105 is about 629.1869119303.

The spelling of 249080105 in words is "two hundred forty-nine million, eighty thousand, one hundred five".

Divisors: 1 5 49816021 249080105