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13053845 = 57253281
BaseRepresentation
bin110001110010…
…111110010101
3220120012111202
4301302332111
511320210340
61143442245
7215645600
oct61627625
926505452
1013053845
117406602
124456385
13292088c
141a3b337
15122cc15
hexc72f95

13053845 has 12 divisors (see below), whose sum is σ = 18222444. Its totient is φ = 8951040.

The previous prime is 13053829. The next prime is 13053853. The reversal of 13053845 is 54835031.

It can be written as a sum of positive squares in 2 ways, for example, as 5866084 + 7187761 = 2422^2 + 2681^2 .

It is not a de Polignac number, because 13053845 - 24 = 13053829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26396 + ... + 26885.

It is an arithmetic number, because the mean of its divisors is an integer number (1518537).

Almost surely, 213053845 is an apocalyptic number.

It is an amenable number.

13053845 is a deficient number, since it is larger than the sum of its proper divisors (5168599).

13053845 is an equidigital number, since it uses as much as digits as its factorization.

13053845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53300 (or 53293 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 13053845 is about 3613.0105175601. The cubic root of 13053845 is about 235.4576565098.

Adding to 13053845 its reverse (54835031), we get a palindrome (67888876).

The spelling of 13053845 in words is "thirteen million, fifty-three thousand, eight hundred forty-five".

Divisors: 1 5 7 35 49 245 53281 266405 372967 1864835 2610769 13053845