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52406245 = 537283277
BaseRepresentation
bin1100011111101…
…0011111100101
310122121111212001
43013322133211
5101403444440
65111125301
71204305613
oct307723745
9118544761
1052406245
1127644651
1215673831
13ab1b718
146d626b3
154902b9a
hex31fa7e5

52406245 has 8 divisors (see below), whose sum is σ = 64587384. Its totient is φ = 40791744.

The previous prime is 52406227. The next prime is 52406279. The reversal of 52406245 is 54260425.

It can be written as a sum of positive squares in 4 ways, for example, as 8661249 + 43744996 = 2943^2 + 6614^2 .

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 52406245 - 211 = 52404197 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 141454 + ... + 141823.

It is an arithmetic number, because the mean of its divisors is an integer number (8073423).

Almost surely, 252406245 is an apocalyptic number.

It is an amenable number.

52406245 is a deficient number, since it is larger than the sum of its proper divisors (12181139).

52406245 is a wasteful number, since it uses less digits than its factorization.

52406245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283319.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 52406245 is about 7239.2157724439. The cubic root of 52406245 is about 374.2205915526.

The spelling of 52406245 in words is "fifty-two million, four hundred six thousand, two hundred forty-five".

Divisors: 1 5 37 185 283277 1416385 10481249 52406245