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3145253 = 29108457
BaseRepresentation
bin1011111111111000100101
312220210110212
423333320211
51301122003
6151225205
735506556
oct13777045
95823425
103145253
111859091
121078205
138617c7
145bc32d
15421dd8
hex2ffe25

3145253 has 4 divisors (see below), whose sum is σ = 3253740. Its totient is φ = 3036768.

The previous prime is 3145249. The next prime is 3145283. The reversal of 3145253 is 3525413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3525413 = 31113723.

It can be written as a sum of positive squares in 2 ways, for example, as 2256004 + 889249 = 1502^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145253 - 22 = 3145249 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 (3145223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54200 + ... + 54257.

It is an arithmetic number, because the mean of its divisors is an integer number (813435).

Almost surely, 23145253 is an apocalyptic number.

It is an amenable number.

3145253 is a deficient number, since it is larger than the sum of its proper divisors (108487).

3145253 is a wasteful number, since it uses less digits than its factorization.

3145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108486.

The product of its digits is 1800, while the sum is 23.

The square root of 3145253 is about 1773.4861149724. The cubic root of 3145253 is about 146.5160477398.

The spelling of 3145253 in words is "three million, one hundred forty-five thousand, two hundred fifty-three".

Divisors: 1 29 108457 3145253