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52360861 = 721068589
BaseRepresentation
bin1100011110111…
…1011010011101
310122112012121011
43013233122131
5101401021421
65110135221
71204026400
oct307573235
9118465534
1052360861
1127613543
1215651511
13ab03b77
146d4dd37
1548e44e1
hex31ef69d

52360861 has 6 divisors (see below), whose sum is σ = 60909630. Its totient is φ = 44880696.

The previous prime is 52360853. The next prime is 52360871. The reversal of 52360861 is 16806325.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 2869636 = 7035^2 + 1694^2 .

It is not a de Polignac number, because 52360861 - 23 = 52360853 is a prime.

It is a super-2 number, since 2×523608612 = 5483319529322642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52360871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 534246 + ... + 534343.

It is an arithmetic number, because the mean of its divisors is an integer number (10151605).

Almost surely, 252360861 is an apocalyptic number.

It is an amenable number.

52360861 is a deficient number, since it is larger than the sum of its proper divisors (8548769).

52360861 is a wasteful number, since it uses less digits than its factorization.

52360861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068603 (or 1068596 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 52360861 is about 7236.0804998286. The cubic root of 52360861 is about 374.1125348867.

The spelling of 52360861 in words is "fifty-two million, three hundred sixty thousand, eight hundred sixty-one".

Divisors: 1 7 49 1068589 7480123 52360861