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56800001 = 151137591
BaseRepresentation
bin1101100010101…
…1001100000001
310221212201221202
43120223030001
5104020100001
65345230545
71256535446
oct330531401
9127781852
1056800001
112a075755
1217032455
13b9c958b
1477879cd
154ebe96b
hex362b301

56800001 has 4 divisors (see below), whose sum is σ = 56839104. Its totient is φ = 56760900.

The previous prime is 56799991. The next prime is 56800021. The reversal of 56800001 is 10000865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56800001 - 26 = 56799937 is a prime.

It is a super-2 number, since 2×568000012 = 6452480227200002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56800021) 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 3 ways as a sum of consecutive naturals, for example, 17285 + ... + 20306.

It is an arithmetic number, because the mean of its divisors is an integer number (14209776).

Almost surely, 256800001 is an apocalyptic number.

It is an amenable number.

56800001 is a deficient number, since it is larger than the sum of its proper divisors (39103).

56800001 is a wasteful number, since it uses less digits than its factorization.

56800001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39102.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 56800001 is about 7536.5775389098. The cubic root of 56800001 is about 384.3994708108.

Adding to 56800001 its reverse (10000865), we get a palindrome (66800866).

The spelling of 56800001 in words is "fifty-six million, eight hundred thousand, one".

Divisors: 1 1511 37591 56800001