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55107637 = 1342110069
BaseRepresentation
bin1101001000111…
…0000000110101
310211200202110121
43102032000311
5103101421022
65245051541
71236256444
oct322160065
9124622417
1055107637
112911a202
1216556bb1
13b556190
147466d5b
154c882c7
hex348e035

55107637 has 8 divisors (see below), whose sum is σ = 59493560. Its totient is φ = 50742720.

The previous prime is 55107631. The next prime is 55107653. The reversal of 55107637 is 73670155.

It can be written as a sum of positive squares in 4 ways, for example, as 4498641 + 50608996 = 2121^2 + 7114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55107637 - 27 = 55107509 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 (55107631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (7436695).

Almost surely, 255107637 is an apocalyptic number.

It is an amenable number.

55107637 is a deficient number, since it is larger than the sum of its proper divisors (4385923).

55107637 is a wasteful number, since it uses less digits than its factorization.

55107637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 55107637 is about 7423.4518251283. The cubic root of 55107637 is about 380.5431682906.

The spelling of 55107637 in words is "fifty-five million, one hundred seven thousand, six hundred thirty-seven".

Divisors: 1 13 421 5473 10069 130897 4239049 55107637