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52840931 = 1113596263
BaseRepresentation
bin1100100110010…
…0100111100011
310200102121010112
43021210213203
5102011402211
65124321535
71211066123
oct311444743
9120377115
1052840931
11279111a0
12158432ab
13ac41530
147036c83
15498b88b
hex32649e3

52840931 has 16 divisors (see below), whose sum is σ = 63141120. Its totient is φ = 43583520.

The previous prime is 52840927. The next prime is 52840933. The reversal of 52840931 is 13904825.

52840931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52840931 - 22 = 52840927 is a prime.

It is a super-2 number, since 2×528409312 = 5584327977893522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52840933) 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 15 ways as a sum of consecutive naturals, for example, 5306 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (3946320).

Almost surely, 252840931 is an apocalyptic number.

52840931 is a deficient number, since it is larger than the sum of its proper divisors (10300189).

52840931 is a wasteful number, since it uses less digits than its factorization.

52840931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6346.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 52840931 is about 7269.1767759493. The cubic root of 52840931 is about 375.2524072553.

The spelling of 52840931 in words is "fifty-two million, eight hundred forty thousand, nine hundred thirty-one".

Divisors: 1 11 13 59 143 649 767 6263 8437 68893 81419 369517 895609 4064687 4803721 52840931