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56243469 = 318747823
BaseRepresentation
bin1101011010001…
…1010100001101
310220211110112110
43112203110031
5103344242334
65325254233
71252030062
oct326432415
9126743473
1056243469
1129825607
1216a04379
13b863179
147680c69
154e0eae9
hex35a350d

56243469 has 4 divisors (see below), whose sum is σ = 74991296. Its totient is φ = 37495644.

The previous prime is 56243449. The next prime is 56243471. The reversal of 56243469 is 96434265.

56243469 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56243469 - 25 = 56243437 is a prime.

It is a super-2 number, since 2×562434692 = 6326655610307922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56243419) 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, 9373909 + ... + 9373914.

It is an arithmetic number, because the mean of its divisors is an integer number (18747824).

Almost surely, 256243469 is an apocalyptic number.

It is an amenable number.

56243469 is a deficient number, since it is larger than the sum of its proper divisors (18747827).

56243469 is a wasteful number, since it uses less digits than its factorization.

56243469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747826.

The product of its digits is 155520, while the sum is 39.

The square root of 56243469 is about 7499.5645873611. The cubic root of 56243469 is about 383.1398866839.

The spelling of 56243469 in words is "fifty-six million, two hundred forty-three thousand, four hundred sixty-nine".

Divisors: 1 3 18747823 56243469