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52256745 = 345196791
BaseRepresentation
bin1100011101010…
…1111111101001
310122022220210000
43013111333221
5101334203440
65104013213
71203114012
oct307257751
9118286700
1052256745
11275522a2
1215601209
13aa98668
146d24009
1548c3730
hex31d5fe9

52256745 has 40 divisors (see below), whose sum is σ = 98619840. Its totient is φ = 26399520.

The previous prime is 52256719. The next prime is 52256761. The reversal of 52256745 is 54765225.

52256745 is a `hidden beast` number, since 52 + 2 + 567 + 45 = 666.

It is not a de Polignac number, because 52256745 - 26 = 52256681 is a prime.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 4300 + ... + 11090.

It is an arithmetic number, because the mean of its divisors is an integer number (2465496).

Almost surely, 252256745 is an apocalyptic number.

It is an amenable number.

52256745 is a deficient number, since it is larger than the sum of its proper divisors (46363095).

52256745 is a wasteful number, since it uses less digits than its factorization.

52256745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827 (or 6818 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 52256745 is about 7228.8826937501. The cubic root of 52256745 is about 373.8644045995.

It can be divided in two parts, 5 and 2256745, that added together give a triangular number (2256750 = T2124).

The spelling of 52256745 in words is "fifty-two million, two hundred fifty-six thousand, seven hundred forty-five".

Divisors: 1 3 5 9 15 19 27 45 57 81 95 135 171 285 405 513 855 1539 2565 6791 7695 20373 33955 61119 101865 129029 183357 305595 387087 550071 645145 916785 1161261 1935435 2750355 3483783 5806305 10451349 17418915 52256745