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56600001 = 326288889
BaseRepresentation
bin1101011111101…
…0010111000001
310221111120121100
43113322113001
5103442200001
65341045013
71255043403
oct327722701
9127446540
1056600001
1129a49467
1216b56769
13b959533
147734b73
154e80586
hex35fa5c1

56600001 has 6 divisors (see below), whose sum is σ = 81755570. Its totient is φ = 37733328.

The previous prime is 56599999. The next prime is 56600003. The reversal of 56600001 is 10000665.

56600001 is a `hidden beast` number, since 5 + 660 + 0 + 0 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (56599999) and next prime (56600003).

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 18147600 = 6201^2 + 4260^2 .

It is not a de Polignac number, because 56600001 - 21 = 56599999 is a prime.

It is a super-2 number, since 2×566000012 = 6407120226400002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56600003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3144436 + ... + 3144453.

Almost surely, 256600001 is an apocalyptic number.

It is an amenable number.

56600001 is a deficient number, since it is larger than the sum of its proper divisors (25155569).

56600001 is a wasteful number, since it uses less digits than its factorization.

56600001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288895 (or 6288892 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 56600001 is about 7523.2972159818. The cubic root of 56600001 is about 383.9477671468.

Adding to 56600001 its reverse (10000665), we get a palindrome (66600666).

The spelling of 56600001 in words is "fifty-six million, six hundred thousand, one".

Divisors: 1 3 9 6288889 18866667 56600001