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55814800 = 2452139537
BaseRepresentation
bin1101010011101…
…0101010010000
310220000200111211
43110322222100
5103242033200
65312145504
71245263236
oct324725220
9126020454
1055814800
1129562538
1216838294
13b743012
1475ac956
154d77aba
hex353aa90

55814800 has 30 divisors (see below), whose sum is σ = 134096018. Its totient is φ = 22325760.

The previous prime is 55814797. The next prime is 55814809. The reversal of 55814800 is 841855.

It can be written as a sum of positive squares in 3 ways, for example, as 7817616 + 47997184 = 2796^2 + 6928^2 .

It is not an unprimeable number, because it can be changed into a prime (55814809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69369 + ... + 70168.

Almost surely, 255814800 is an apocalyptic number.

55814800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55814800 is an abundant number, since it is smaller than the sum of its proper divisors (78281218).

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

55814800 is a wasteful number, since it uses less digits than its factorization.

55814800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139555 (or 139544 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 55814800 is about 7470.9303302869. The cubic root of 55814800 is about 382.1640149830.

The spelling of 55814800 in words is "fifty-five million, eight hundred fourteen thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 139537 279074 558148 697685 1116296 1395370 2232592 2790740 3488425 5581480 6976850 11162960 13953700 27907400 55814800