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56880001 = 157362293
BaseRepresentation
bin1101100011111…
…0101110000001
310222000210200201
43120332232001
5104030130001
65351045201
71260320623
oct330765601
9128023621
1056880001
112a11a872
1217070801
13ba26b09
1477a8c13
154ed8501
hex363eb81

56880001 has 4 divisors (see below), whose sum is σ = 57242452. Its totient is φ = 56517552.

The previous prime is 56879959. The next prime is 56880029. The reversal of 56880001 is 10008865.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25250625 + 31629376 = 5025^2 + 5624^2 .

It is a cyclic number.

It is not a de Polignac number, because 56880001 - 27 = 56879873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56880101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180990 + ... + 181303.

It is an arithmetic number, because the mean of its divisors is an integer number (14310613).

Almost surely, 256880001 is an apocalyptic number.

It is an amenable number.

56880001 is a deficient number, since it is larger than the sum of its proper divisors (362451).

56880001 is a wasteful number, since it uses less digits than its factorization.

56880001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362450.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 56880001 is about 7541.8831202824. The cubic root of 56880001 is about 384.5798553816.

Adding to 56880001 its reverse (10008865), we get a palindrome (66888866).

The spelling of 56880001 in words is "fifty-six million, eight hundred eighty thousand, one".

Divisors: 1 157 362293 56880001