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55008810 = 23251733533
BaseRepresentation
bin1101000111010…
…1111000101010
310211111201220100
43101311320222
5103040240220
65243010230
71235365353
oct321657052
9124451810
1055008810
1129061a2a
1216509976
13b5201bc
14743cd2a
154c68d90
hex3475e2a

55008810 has 48 divisors (see below), whose sum is σ = 143890344. Its totient is φ = 14580096.

The previous prime is 55008799. The next prime is 55008823. The reversal of 55008810 is 1880055.

It can be written as a sum of positive squares in 4 ways, for example, as 54863649 + 145161 = 7407^2 + 381^2 .

It is a super-2 number, since 2×550088102 = 6051938355232200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13804 + ... + 17336.

Almost surely, 255008810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55008810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71945172).

55008810 is an abundant number, since it is smaller than the sum of its proper divisors (88881534).

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

55008810 is a wasteful number, since it uses less digits than its factorization.

55008810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3716 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 55008810 is about 7416.7924333906. The cubic root of 55008810 is about 380.3155504534.

Adding to 55008810 its reverse (1880055), we get a palindrome (56888865).

The spelling of 55008810 in words is "fifty-five million, eight thousand, eight hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 173 346 519 865 1038 1557 1730 2595 3114 3533 5190 7066 7785 10599 15570 17665 21198 31797 35330 52995 63594 105990 158985 317970 611209 1222418 1833627 3056045 3667254 5500881 6112090 9168135 11001762 18336270 27504405 55008810