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106254805 = 521250961
BaseRepresentation
bin1100101010101…
…01000111010101
321101221022012011
412111111013111
5204200123210
614313224221
72430102526
oct625250725
9241838164
10106254805
1154a83898
122b702071
1319023787
141017c84d
1594dcd8a
hex65551d5

106254805 has 4 divisors (see below), whose sum is σ = 127505772. Its totient is φ = 85003840.

The previous prime is 106254803. The next prime is 106254809. The reversal of 106254805 is 508452601.

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 43639236 + 62615569 = 6606^2 + 7913^2 .

It is not a de Polignac number, because 106254805 - 21 = 106254803 is a prime.

It is a super-2 number, since 2×1062548052 = 22580167171176050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106254803) 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, 10625476 + ... + 10625485.

It is an arithmetic number, because the mean of its divisors is an integer number (31876443).

Almost surely, 2106254805 is an apocalyptic number.

It is an amenable number.

106254805 is a deficient number, since it is larger than the sum of its proper divisors (21250967).

106254805 is an equidigital number, since it uses as much as digits as its factorization.

106254805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250966.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 106254805 is about 10307.9971381447. The cubic root of 106254805 is about 473.6412582875.

The spelling of 106254805 in words is "one hundred six million, two hundred fifty-four thousand, eight hundred five".

Divisors: 1 5 21250961 106254805