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52181103 = 3131337977
BaseRepresentation
bin1100011100001…
…1100001101111
310122012002000110
43013003201233
5101324243403
65102231103
71202350332
oct307034157
9118162013
1052181103
1127500487
1215585493
13aa700c0
146d04619
1548ab103
hex31c386f

52181103 has 8 divisors (see below), whose sum is σ = 74926768. Its totient is φ = 32111424.

The previous prime is 52181093. The next prime is 52181111. The reversal of 52181103 is 30118125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52181103 - 25 = 52181071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52181103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52181113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668950 + ... + 669027.

It is an arithmetic number, because the mean of its divisors is an integer number (9365846).

Almost surely, 252181103 is an apocalyptic number.

52181103 is a deficient number, since it is larger than the sum of its proper divisors (22745665).

52181103 is a wasteful number, since it uses less digits than its factorization.

52181103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337993.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 52181103 is about 7223.6488702040. The cubic root of 52181103 is about 373.6839270530.

Adding to 52181103 its reverse (30118125), we get a palindrome (82299228).

The spelling of 52181103 in words is "fifty-two million, one hundred eighty-one thousand, one hundred three".

Divisors: 1 3 13 39 1337977 4013931 17393701 52181103