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52172263 = 1113615981
BaseRepresentation
bin1100011100000…
…1010111100111
310122011121220001
43013001113213
5101324003023
65102122131
71202312503
oct307012747
9118147801
1052172263
11274a4880
1215580347
13aa69080
146d01303
1548a86ad
hex31c15e7

52172263 has 16 divisors (see below), whose sum is σ = 62308512. Its totient is φ = 43056000.

The previous prime is 52172261. The next prime is 52172273. The reversal of 52172263 is 36227125.

It is not a de Polignac number, because 52172263 - 21 = 52172261 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 (52172261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5733 + ... + 11713.

It is an arithmetic number, because the mean of its divisors is an integer number (3894282).

Almost surely, 252172263 is an apocalyptic number.

52172263 is a deficient number, since it is larger than the sum of its proper divisors (10136249).

52172263 is a wasteful number, since it uses less digits than its factorization.

52172263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066.

The product of its digits is 5040, while the sum is 28.

The square root of 52172263 is about 7223.0369651553. The cubic root of 52172263 is about 373.6628239315.

Adding to 52172263 its reverse (36227125), we get a palindrome (88399388).

The spelling of 52172263 in words is "fifty-two million, one hundred seventy-two thousand, two hundred sixty-three".

Divisors: 1 11 13 61 143 671 793 5981 8723 65791 77753 364841 855283 4013251 4742933 52172263