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10253491 = 13774843
BaseRepresentation
bin100111000111…
…010010110011
3201021221010221
4213013102303
510111102431
61003433511
7153103363
oct47072263
921257127
1010253491
115873666
123525897
132180071
14150c9a3
15d78111
hex9c74b3

10253491 has 4 divisors (see below), whose sum is σ = 10328472. Its totient is φ = 10178512.

The previous prime is 10253471. The next prime is 10253497. The reversal of 10253491 is 19435201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10253491 - 25 = 10253459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10253497) 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, 37285 + ... + 37558.

It is an arithmetic number, because the mean of its divisors is an integer number (2582118).

Almost surely, 210253491 is an apocalyptic number.

10253491 is a deficient number, since it is larger than the sum of its proper divisors (74981).

10253491 is an equidigital number, since it uses as much as digits as its factorization.

10253491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74980.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 10253491 is about 3202.1072749051. The cubic root of 10253491 is about 217.2487326028.

Adding to 10253491 its reverse (19435201), we get a palindrome (29688692).

The spelling of 10253491 in words is "ten million, two hundred fifty-three thousand, four hundred ninety-one".

Divisors: 1 137 74843 10253491