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103252705 = 520650541
BaseRepresentation
bin1100010011110…
…00001011100001
321012021210002021
412021320023201
5202413041310
614125021441
72362430203
oct611701341
9235253067
10103252705
1153313316
122a6b4881
131851219a
14d9da773
1590e85da
hex62782e1

103252705 has 4 divisors (see below), whose sum is σ = 123903252. Its totient is φ = 82602160.

The previous prime is 103252657. The next prime is 103252711. The reversal of 103252705 is 507252301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507252301 = 857591893.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 50239744 = 7281^2 + 7088^2 .

It is not a de Polignac number, because 103252705 - 225 = 69698273 is a prime.

It is a super-2 number, since 2×1032527052 = 21322242179634050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103252705.

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, 10325266 + ... + 10325275.

It is an arithmetic number, because the mean of its divisors is an integer number (30975813).

Almost surely, 2103252705 is an apocalyptic number.

It is an amenable number.

103252705 is a deficient number, since it is larger than the sum of its proper divisors (20650547).

103252705 is an equidigital number, since it uses as much as digits as its factorization.

103252705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20650546.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 103252705 is about 10161.3338199274. Note that the first 3 decimals coincide. The cubic root of 103252705 is about 469.1378566475.

The spelling of 103252705 in words is "one hundred three million, two hundred fifty-two thousand, seven hundred five".

Divisors: 1 5 20650541 103252705