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55230415400 = 2352276152077
BaseRepresentation
bin110011011011111111…
…010100001000101000
312021120002202210200202
4303123333110020220
51401102441243100
641212243251332
73663442533146
oct633377241050
9167502683622
1055230415400
1121472147606
12a854679b48
135292574994
14295d250596
151683b627d5
hexcdbfd4228

55230415400 has 24 divisors (see below), whose sum is σ = 128410716270. Its totient is φ = 22092166080.

The previous prime is 55230415397. The next prime is 55230415417. The reversal of 55230415400 is 451403255.

It can be written as a sum of positive squares in 3 ways, for example, as 24291716164 + 30938699236 = 155858^2 + 175894^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138075839 + ... + 138076238.

Almost surely, 255230415400 is an apocalyptic number.

55230415400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55230415400 is an abundant number, since it is smaller than the sum of its proper divisors (73180300870).

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

55230415400 is a wasteful number, since it uses less digits than its factorization.

55230415400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276152093 (or 276152084 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 55230415400 its reverse (451403255), we get a palindrome (55681818655).

The spelling of 55230415400 in words is "fifty-five billion, two hundred thirty million, four hundred fifteen thousand, four hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 276152077 552304154 1104608308 1380760385 2209216616 2761520770 5523041540 6903801925 11046083080 13807603850 27615207700 55230415400