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55690446 = 2373142773
BaseRepresentation
bin1101010001110…
…0010011001110
310212210100221010
43110130103032
5103224043241
65305350050
71244234550
oct324342316
9125710833
1055690446
1129488069
1216798326
13b6cb536
1475794d0
154d50d16
hex351c4ce

55690446 has 32 divisors (see below), whose sum is σ = 131401728. Its totient is φ = 15397920.

The previous prime is 55690373. The next prime is 55690447. The reversal of 55690446 is 64409655.

55690446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55690447) 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 15 ways as a sum of consecutive naturals, for example, 20085 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (4106304).

Almost surely, 255690446 is an apocalyptic number.

55690446 is an abundant number, since it is smaller than the sum of its proper divisors (75711282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55690446 is a wasteful number, since it uses less digits than its factorization.

55690446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42816.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 55690446 is about 7462.6031651160. The cubic root of 55690446 is about 381.8799866041.

The spelling of 55690446 in words is "fifty-five million, six hundred ninety thousand, four hundred forty-six".

Divisors: 1 2 3 6 7 14 21 31 42 62 93 186 217 434 651 1302 42773 85546 128319 256638 299411 598822 898233 1325963 1796466 2651926 3977889 7955778 9281741 18563482 27845223 55690446