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55452160 = 29521661
BaseRepresentation
bin1101001110001…
…0001000000000
310212100021001201
43103202020000
5103143432120
65300310544
71242223051
oct323421000
9125307051
1055452160
1129335035
12166a2454
13b646c3a
147516728
154d0540a
hex34e2200

55452160 has 40 divisors (see below), whose sum is σ = 132961356. Its totient is φ = 22179840.

The previous prime is 55452157. The next prime is 55452161. The reversal of 55452160 is 6125455.

It can be written as a sum of positive squares in 2 ways, for example, as 53934336 + 1517824 = 7344^2 + 1232^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (55452161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8271 + ... + 13390.

Almost surely, 255452160 is an apocalyptic number.

It is an amenable number.

55452160 is an abundant number, since it is smaller than the sum of its proper divisors (77509196).

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

55452160 is an equidigital number, since it uses as much as digits as its factorization.

55452160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684 (or 21668 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 55452160 is about 7446.6207100939. The cubic root of 55452160 is about 381.3345504495.

The spelling of 55452160 in words is "fifty-five million, four hundred fifty-two thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1280 2560 21661 43322 86644 108305 173288 216610 346576 433220 693152 866440 1386304 1732880 2772608 3465760 5545216 6931520 11090432 13863040 27726080 55452160