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56660893 = 411381973
BaseRepresentation
bin1101100000100…
…1001110011101
310221121200010121
43120021032131
5104001122033
65342234541
71255416052
oct330111635
9127550117
1056660893
1129a90193
1216b85a51
13b97b173
14774d029
154e9362d
hex360939d

56660893 has 4 divisors (see below), whose sum is σ = 58042908. Its totient is φ = 55278880.

The previous prime is 56660873. The next prime is 56660927. The reversal of 56660893 is 39806665.

56660893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39806665 = 57961333.

It can be written as a sum of positive squares in 2 ways, for example, as 10936249 + 45724644 = 3307^2 + 6762^2 .

It is a cyclic number.

It is not a de Polignac number, because 56660893 - 25 = 56660861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56660833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690946 + ... + 691027.

It is an arithmetic number, because the mean of its divisors is an integer number (14510727).

Almost surely, 256660893 is an apocalyptic number.

It is an amenable number.

56660893 is a deficient number, since it is larger than the sum of its proper divisors (1382015).

56660893 is a wasteful number, since it uses less digits than its factorization.

56660893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382014.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 56660893 is about 7527.3430239361. The cubic root of 56660893 is about 384.0854053562.

The spelling of 56660893 in words is "fifty-six million, six hundred sixty thousand, eight hundred ninety-three".

Divisors: 1 41 1381973 56660893