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107222905 = 521444581
BaseRepresentation
bin1100110010000…
…01011101111001
321110202111011201
412121001131321
5204422113110
614350054201
72441244136
oct631013571
9243674151
10107222905
1155585179
122baaa361
13192a230a
141035158d
15962eb3a
hex6641779

107222905 has 4 divisors (see below), whose sum is σ = 128667492. Its totient is φ = 85778320.

The previous prime is 107222891. The next prime is 107222923. The reversal of 107222905 is 509222701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509222701 = 1339170977.

It can be written as a sum of positive squares in 2 ways, for example, as 35176761 + 72046144 = 5931^2 + 8488^2 .

It is not a de Polignac number, because 107222905 - 25 = 107222873 is a prime.

It is a super-2 number, since 2×1072229052 = 22993502713278050, 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, 10722286 + ... + 10722295.

It is an arithmetic number, because the mean of its divisors is an integer number (32166873).

Almost surely, 2107222905 is an apocalyptic number.

It is an amenable number.

107222905 is a deficient number, since it is larger than the sum of its proper divisors (21444587).

107222905 is an equidigital number, since it uses as much as digits as its factorization.

107222905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444586.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 107222905 is about 10354.8493470451. The cubic root of 107222905 is about 475.0753786191.

The spelling of 107222905 in words is "one hundred seven million, two hundred twenty-two thousand, nine hundred five".

Divisors: 1 5 21444581 107222905