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55188214952 = 23132572064809
BaseRepresentation
bin110011011001011110…
…010101010010101000
312021110011100210120012
4303121132111102220
51401011140334302
641204134551052
73662421041603
oct633136252250
9167404323505
1055188214952
1121450343802
12a842508488
1352868ba6c0
1429577c733a
1516800c8a52
hexcd97954a8

55188214952 has 32 divisors (see below), whose sum is σ = 111871405800. Its totient is φ = 25372360704.

The previous prime is 55188214901. The next prime is 55188214987. The reversal of 55188214952 is 25941288155.

It is a happy number.

55188214952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 49162419076 + 6025795876 = 221726^2 + 77626^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55188214952.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005677 + ... + 1059132.

Almost surely, 255188214952 is an apocalyptic number.

55188214952 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55188214952 is an abundant number, since it is smaller than the sum of its proper divisors (56683190848).

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

55188214952 is a wasteful number, since it uses less digits than its factorization.

55188214952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065085 (or 2065081 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 50.

The spelling of 55188214952 in words is "fifty-five billion, one hundred eighty-eight million, two hundred fourteen thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 13 26 52 104 257 514 1028 2056 3341 6682 13364 26728 2064809 4129618 8259236 16518472 26842517 53685034 107370068 214740136 530655913 1061311826 2122623652 4245247304 6898526869 13797053738 27594107476 55188214952