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102550213 = 585717509
BaseRepresentation
bin1100001110011…
…00101011000101
321010222002110001
412013030223011
5202223101323
614102001301
72353443133
oct607145305
9233862401
10102550213
1152983547
122a416231
13183274cc
14d896753
15900a3ad
hex61ccac5

102550213 has 4 divisors (see below), whose sum is σ = 102573580. Its totient is φ = 102526848.

The previous prime is 102550187. The next prime is 102550247. The reversal of 102550213 is 312055201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312055201 = 1432321787.

It can be written as a sum of positive squares in 2 ways, for example, as 43059844 + 59490369 = 6562^2 + 7713^2 .

It is a cyclic number.

It is not a de Polignac number, because 102550213 - 213 = 102542021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102550913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898 + ... + 14611.

It is an arithmetic number, because the mean of its divisors is an integer number (25643395).

Almost surely, 2102550213 is an apocalyptic number.

It is an amenable number.

102550213 is a deficient number, since it is larger than the sum of its proper divisors (23367).

102550213 is an equidigital number, since it uses as much as digits as its factorization.

102550213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23366.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 102550213 is about 10126.7079053363. The cubic root of 102550213 is about 468.0714896147.

The spelling of 102550213 in words is "one hundred two million, five hundred fifty thousand, two hundred thirteen".

Divisors: 1 5857 17509 102550213