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52250645 = 561716937
BaseRepresentation
bin1100011101010…
…0100000010101
310122022121102002
43013110200111
5101334010040
65103525045
71203060146
oct307244025
9118277362
1052250645
1127548757
12155b9785
13aa95955
146d21acd
1548c1a15
hex31d4815

52250645 has 8 divisors (see below), whose sum is σ = 62806104. Its totient is φ = 41730304.

The previous prime is 52250629. The next prime is 52250647. The reversal of 52250645 is 54605225.

It can be written as a sum of positive squares in 4 ways, for example, as 208849 + 52041796 = 457^2 + 7214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52250645 - 24 = 52250629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52250647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5384 + ... + 11553.

It is an arithmetic number, because the mean of its divisors is an integer number (7850763).

Almost surely, 252250645 is an apocalyptic number.

It is an amenable number.

52250645 is a deficient number, since it is larger than the sum of its proper divisors (10555459).

52250645 is a wasteful number, since it uses less digits than its factorization.

52250645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17559.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 52250645 is about 7228.4607628457. The cubic root of 52250645 is about 373.8498568021.

The spelling of 52250645 in words is "fifty-two million, two hundred fifty thousand, six hundred forty-five".

Divisors: 1 5 617 3085 16937 84685 10450129 52250645