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10255381 = 61891889
BaseRepresentation
bin100111000111…
…110000010101
3201022000201221
4213013300111
510111133011
61003450341
7153112033
oct47076025
921260657
1010255381
115875024
1235269b1
132180b96
14150d553
15d78971
hex9c7c15

10255381 has 8 divisors (see below), whose sum is σ = 10546200. Its totient is φ = 9968640.

The previous prime is 10255367. The next prime is 10255387. The reversal of 10255381 is 18355201.

It is a happy number.

10255381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72900 + 10182481 = 270^2 + 3191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10255381 - 211 = 10253333 is a prime.

It is a super-2 number, since 2×102553812 = 210345678910322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10255387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485 + ... + 6373.

It is an arithmetic number, because the mean of its divisors is an integer number (1318275).

Almost surely, 210255381 is an apocalyptic number.

It is an amenable number.

10255381 is a deficient number, since it is larger than the sum of its proper divisors (290819).

10255381 is an equidigital number, since it uses as much as digits as its factorization.

10255381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 10255381 is about 3202.4023794645. The cubic root of 10255381 is about 217.2620800855.

The spelling of 10255381 in words is "ten million, two hundred fifty-five thousand, three hundred eighty-one".

Divisors: 1 61 89 1889 5429 115229 168121 10255381