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102203253 = 3211355917
BaseRepresentation
bin1100001011101…
…11111101110101
321010022110111200
412011313331311
5202131001003
614050323113
72350466445
oct605677565
9233273450
10102203253
11527668a9
122a289499
13182355c9
14d806125
158e8c6a3
hex6177f75

102203253 has 6 divisors (see below), whose sum is σ = 147626934. Its totient is φ = 68135496.

The previous prime is 102203251. The next prime is 102203273. The reversal of 102203253 is 352302201.

It can be written as a sum of positive squares in only one way, i.e., 98843364 + 3359889 = 9942^2 + 1833^2 .

It is not a de Polignac number, because 102203253 - 21 = 102203251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102203251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5677950 + ... + 5677967.

It is an arithmetic number, because the mean of its divisors is an integer number (24604489).

Almost surely, 2102203253 is an apocalyptic number.

It is an amenable number.

102203253 is a deficient number, since it is larger than the sum of its proper divisors (45423681).

102203253 is a wasteful number, since it uses less digits than its factorization.

102203253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11355923 (or 11355920 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 102203253 is about 10109.5624534398. The cubic root of 102203253 is about 467.5430149064.

Adding to 102203253 its reverse (352302201), we get a palindrome (454505454).

The spelling of 102203253 in words is "one hundred two million, two hundred three thousand, two hundred fifty-three".

Divisors: 1 3 9 11355917 34067751 102203253