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56064737 = 397141221
BaseRepresentation
bin1101010111011…
…1101011100001
310220111101100202
43111313223201
5103323032422
65321354545
71250354021
oct325675341
9126441322
1056064737
11297132a3
1216938a55
13b7cca01
147635a81
154dc6b92
hex3577ae1

56064737 has 4 divisors (see below), whose sum is σ = 56206356. Its totient is φ = 55923120.

The previous prime is 56064727. The next prime is 56064773. The reversal of 56064737 is 73746065.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73746065 = 514749213.

It can be written as a sum of positive squares in 2 ways, for example, as 16613776 + 39450961 = 4076^2 + 6281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-56064737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56064737.

It is not an unprimeable number, because it can be changed into a prime (56064707) 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, 70214 + ... + 71007.

It is an arithmetic number, because the mean of its divisors is an integer number (14051589).

Almost surely, 256064737 is an apocalyptic number.

It is an amenable number.

56064737 is a deficient number, since it is larger than the sum of its proper divisors (141619).

56064737 is a wasteful number, since it uses less digits than its factorization.

56064737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141618.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 56064737 is about 7487.6389469578. The cubic root of 56064737 is about 382.7336052892.

The spelling of 56064737 in words is "fifty-six million, sixty-four thousand, seven hundred thirty-seven".

Divisors: 1 397 141221 56064737