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55253723 = 7217113587
BaseRepresentation
bin1101001011000…
…1101011011011
310211222011212012
43102301223123
5103121104343
65252140135
71240435400
oct322615333
9124864765
1055253723
1129209a38
121660764b
13b5a7815
1474a42a7
154cb6718
hex34b1adb

55253723 has 24 divisors (see below), whose sum is σ = 68774832. Its totient is φ = 44104704.

The previous prime is 55253713. The next prime is 55253741. The reversal of 55253723 is 32735255.

It is not a de Polignac number, because 55253723 - 210 = 55252699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55253723.

It is not an unprimeable number, because it can be changed into a prime (55253713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93836 + ... + 94422.

It is an arithmetic number, because the mean of its divisors is an integer number (2865618).

Almost surely, 255253723 is an apocalyptic number.

55253723 is a deficient number, since it is larger than the sum of its proper divisors (13521109).

55253723 is a wasteful number, since it uses less digits than its factorization.

55253723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 724 counting only the distinct ones).

The product of its digits is 31500, while the sum is 32.

The square root of 55253723 is about 7433.2848055217. The cubic root of 55253723 is about 380.8791349017.

Adding to 55253723 its reverse (32735255), we get a palindrome (87988978).

The spelling of 55253723 in words is "fifty-five million, two hundred fifty-three thousand, seven hundred twenty-three".

Divisors: 1 7 17 49 113 119 587 791 833 1921 4109 5537 9979 13447 28763 66331 69853 94129 464317 488971 1127627 3250219 7893389 55253723