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52248161 = 7447463
BaseRepresentation
bin1100011101001…
…1111001100001
310122022111000002
43013103321201
5101333420121
65103505345
71203050000
oct307237141
9118274002
1052248161
11275468a9
12155b8255
13aa94794
146d20c37
1548c0e0b
hex31d3e61

52248161 has 20 divisors (see below), whose sum is σ = 62383872. Its totient is φ = 43736616.

The previous prime is 52248127. The next prime is 52248173. The reversal of 52248161 is 16184225.

It is a de Polignac number, because none of the positive numbers 2k-52248161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52248761) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112616 + ... + 113078.

Almost surely, 252248161 is an apocalyptic number.

It is an amenable number.

52248161 is a deficient number, since it is larger than the sum of its proper divisors (10135711).

52248161 is an frugal number, since it uses more digits than its factorization.

52248161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 517 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 52248161 is about 7228.2889399913. The cubic root of 52248161 is about 373.8439324238.

The spelling of 52248161 in words is "fifty-two million, two hundred forty-eight thousand, one hundred sixty-one".

Divisors: 1 7 47 49 329 343 463 2303 2401 3241 16121 21761 22687 112847 152327 158809 1066289 1111663 7464023 52248161