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10557805 = 52391807
BaseRepresentation
bin101000010001…
…100101101101
3201212101120211
4220101211231
510200322210
61014142421
7155511526
oct50214555
921771524
1010557805
115a61265
123651a11
13225872b
14158b84d
15dd838a
hexa1196d

10557805 has 8 divisors (see below), whose sum is σ = 13220352. Its totient is φ = 8078928.

The previous prime is 10557791. The next prime is 10557823. The reversal of 10557805 is 50875501.

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 10557805 - 25 = 10557773 is a prime.

It is a super-2 number, since 2×105578052 = 222934492836050, which contains 22 as substring.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45789 + ... + 46018.

It is an arithmetic number, because the mean of its divisors is an integer number (1652544).

Almost surely, 210557805 is an apocalyptic number.

It is an amenable number.

10557805 is a deficient number, since it is larger than the sum of its proper divisors (2662547).

10557805 is an equidigital number, since it uses as much as digits as its factorization.

10557805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91835.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 10557805 is about 3249.2776120239. The cubic root of 10557805 is about 219.3770600965.

The spelling of 10557805 in words is "ten million, five hundred fifty-seven thousand, eight hundred five".

Divisors: 1 5 23 115 91807 459035 2111561 10557805