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BaseRepresentation
bin1101011001001…
…1110101001101
310220201020112102
43112103311031
5103340230140
65324044445
71251344135
oct326236515
9126636472
1056180045
1129791999
1216993725
13b84033c
147665ac5
154deae15
hex3593d4d

56180045 has 16 divisors (see below), whose sum is σ = 69491520. Its totient is φ = 43574400.

The previous prime is 56180041. The next prime is 56180051. The reversal of 56180045 is 54008165.

It is a happy number.

It is not a de Polignac number, because 56180045 - 22 = 56180041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56180041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35930 + ... + 37460.

It is an arithmetic number, because the mean of its divisors is an integer number (4343220).

Almost surely, 256180045 is an apocalyptic number.

It is an amenable number.

56180045 is a deficient number, since it is larger than the sum of its proper divisors (13311475).

56180045 is a wasteful number, since it uses less digits than its factorization.

56180045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 56180045 is about 7495.3348824452. The cubic root of 56180045 is about 382.9958142280.

The spelling of 56180045 in words is "fifty-six million, one hundred eighty thousand, forty-five".