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55830260 = 2252791513
BaseRepresentation
bin1101010011111…
…0011011110100
310220001110201102
43110332123310
5103243032020
65312345232
71245356303
oct324763364
9126043642
1055830260
1129573112
1216845218
13b74a075
1475b443a
154d7c475
hex353e6f4

55830260 has 12 divisors (see below), whose sum is σ = 117243588. Its totient is φ = 22332096.

The previous prime is 55830241. The next prime is 55830263. The reversal of 55830260 is 6203855.

It can be written as a sum of positive squares in 2 ways, for example, as 28665316 + 27164944 = 5354^2 + 5212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55830263) 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, 1395737 + ... + 1395776.

It is an arithmetic number, because the mean of its divisors is an integer number (9770299).

Almost surely, 255830260 is an apocalyptic number.

It is an amenable number.

55830260 is an abundant number, since it is smaller than the sum of its proper divisors (61413328).

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

55830260 is a wasteful number, since it uses less digits than its factorization.

55830260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791522 (or 2791520 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 55830260 is about 7471.9649356779. The cubic root of 55830260 is about 382.1992966063.

The spelling of 55830260 in words is "fifty-five million, eight hundred thirty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 2791513 5583026 11166052 13957565 27915130 55830260