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56430685 = 511286137
BaseRepresentation
bin1101011101000…
…1000001011101
310221011222100101
43113101001131
5103421240220
65333301101
71253436643
oct327210135
9127158311
1056430685
1129943233
1216a94791
13b8ca44c
1476cd193
154e4a30a
hex35d105d

56430685 has 4 divisors (see below), whose sum is σ = 67716828. Its totient is φ = 45144544.

The previous prime is 56430659. The next prime is 56430709. The reversal of 56430685 is 58603465.

56430685 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: 58603465 = 511720693.

It can be written as a sum of positive squares in 2 ways, for example, as 23677956 + 32752729 = 4866^2 + 5723^2 .

It is a cyclic number.

It is not a de Polignac number, because 56430685 - 27 = 56430557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 5643064 + ... + 5643073.

It is an arithmetic number, because the mean of its divisors is an integer number (16929207).

Almost surely, 256430685 is an apocalyptic number.

It is an amenable number.

56430685 is a deficient number, since it is larger than the sum of its proper divisors (11286143).

56430685 is a wasteful number, since it uses less digits than its factorization.

56430685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11286142.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 56430685 is about 7512.0360089659. The cubic root of 56430685 is about 383.5645313980.

The spelling of 56430685 in words is "fifty-six million, four hundred thirty thousand, six hundred eighty-five".

Divisors: 1 5 11286137 56430685