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52042385 = 529379947
BaseRepresentation
bin1100011010000…
…1101010010001
310121221000201202
43012201222101
5101310324020
65055240545
71201232033
oct306415221
9117830652
1052042385
112741623a
1215519155
13aa21c15
146ca9c53
15487ee75
hex31a1a91

52042385 has 16 divisors (see below), whose sum is σ = 64843200. Its totient is φ = 40049856.

The previous prime is 52042373. The next prime is 52042391. The reversal of 52042385 is 58324025.

It is a cyclic number.

It is not a de Polignac number, because 52042385 - 212 = 52038289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54482 + ... + 55428.

It is an arithmetic number, because the mean of its divisors is an integer number (4052700).

Almost surely, 252042385 is an apocalyptic number.

It is an amenable number.

52042385 is a deficient number, since it is larger than the sum of its proper divisors (12800815).

52042385 is a wasteful number, since it uses less digits than its factorization.

52042385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 52042385 is about 7214.0408232834. The cubic root of 52042385 is about 373.3524999903.

52042385 divided by its sum of digits (29) gives a triangular number (1794565 = T1894).

The spelling of 52042385 in words is "fifty-two million, forty-two thousand, three hundred eighty-five".

Divisors: 1 5 29 145 379 947 1895 4735 10991 27463 54955 137315 358913 1794565 10408477 52042385