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56080749 = 318693583
BaseRepresentation
bin1101010111101…
…1100101101101
310220112012022210
43111323211231
5103324040444
65322001033
71250451504
oct325734555
9126465283
1056080749
112972432a
1216946179
13b80709a
14763b83b
154dcb7b9
hex357b96d

56080749 has 4 divisors (see below), whose sum is σ = 74774336. Its totient is φ = 37387164.

The previous prime is 56080747. The next prime is 56080753. The reversal of 56080749 is 94708065.

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 56080749 - 21 = 56080747 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 (56080747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9346789 + ... + 9346794.

It is an arithmetic number, because the mean of its divisors is an integer number (18693584).

Almost surely, 256080749 is an apocalyptic number.

It is an amenable number.

56080749 is a deficient number, since it is larger than the sum of its proper divisors (18693587).

56080749 is a wasteful number, since it uses less digits than its factorization.

56080749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18693586.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 56080749 is about 7488.7080995323. The cubic root of 56080749 is about 382.7700378580.

The spelling of 56080749 in words is "fifty-six million, eighty thousand, seven hundred forty-nine".

Divisors: 1 3 18693583 56080749