Search a number
-
+
52809841 = 729377989
BaseRepresentation
bin1100100101110…
…1000001110001
310200101000111001
43021131001301
5102004403331
65123522001
71210606360
oct311350161
9120330431
1052809841
112789a8a7
1215829301
13ac30336
1470297d7
154982561
hex325d071

52809841 has 32 divisors (see below), whose sum is σ = 65664000. Its totient is φ = 41513472.

The previous prime is 52809821. The next prime is 52809857. The reversal of 52809841 is 14890825.

It is not a de Polignac number, because 52809841 - 29 = 52809329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 52809841.

It is not an unprimeable number, because it can be changed into a prime (52809821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 593325 + ... + 593413.

It is an arithmetic number, because the mean of its divisors is an integer number (2052000).

Almost surely, 252809841 is an apocalyptic number.

It is an amenable number.

52809841 is a deficient number, since it is larger than the sum of its proper divisors (12854159).

52809841 is a wasteful number, since it uses less digits than its factorization.

52809841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 52809841 is about 7267.0379798099. The cubic root of 52809841 is about 375.1787971077.

The spelling of 52809841 in words is "fifty-two million, eight hundred nine thousand, eight hundred forty-one".

Divisors: 1 7 29 37 79 89 203 259 553 623 1073 2291 2581 2923 3293 7031 7511 16037 18067 20461 23051 49217 84767 95497 203899 260147 593369 668479 1427293 1821029 7544263 52809841