Search a number
-
+
52090181 = 1113364267
BaseRepresentation
bin1100011010110…
…1010101000101
310122000110021222
43012231111011
5101313341211
65100250125
71201521263
oct306552505
9118013258
1052090181
1127449140
1215540945
13aa3a8c0
146cbd433
15488e1db
hex31ad545

52090181 has 8 divisors (see below), whose sum is σ = 61197024. Its totient is φ = 43711920.

The previous prime is 52090169. The next prime is 52090183. The reversal of 52090181 is 18109025.

It is a happy number.

52090181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 52090181 - 218 = 51828037 is a prime.

It is a super-2 number, since 2×520901812 = 5426773913225522, which contains 22 as substring.

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 52090181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52090183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181991 + ... + 182276.

It is an arithmetic number, because the mean of its divisors is an integer number (7649628).

Almost surely, 252090181 is an apocalyptic number.

It is an amenable number.

52090181 is a deficient number, since it is larger than the sum of its proper divisors (9106843).

52090181 is a wasteful number, since it uses less digits than its factorization.

52090181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364291.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 52090181 is about 7217.3527695409. The cubic root of 52090181 is about 373.4667613177.

The spelling of 52090181 in words is "fifty-two million, ninety thousand, one hundred eighty-one".

Divisors: 1 11 13 143 364267 4006937 4735471 52090181