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55286061 = 3131140677
BaseRepresentation
bin1101001011100…
…1100100101101
310212000211012220
43102321210231
5103123123221
65252545553
71240631565
oct322714455
9125024186
1055286061
1129231266
12166222b9
13b5b945c
1474b1da5
154cc10c6
hex34b992d

55286061 has 8 divisors (see below), whose sum is σ = 74277984. Its totient is φ = 36575760.

The previous prime is 55286059. The next prime is 55286071. The reversal of 55286061 is 16068255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55286061 - 21 = 55286059 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55286071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69946 + ... + 70731.

It is an arithmetic number, because the mean of its divisors is an integer number (9284748).

Almost surely, 255286061 is an apocalyptic number.

It is an amenable number.

55286061 is a deficient number, since it is larger than the sum of its proper divisors (18991923).

55286061 is a wasteful number, since it uses less digits than its factorization.

55286061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140811.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55286061 is about 7435.4597033405. The cubic root of 55286061 is about 380.9534253248.

The spelling of 55286061 in words is "fifty-five million, two hundred eighty-six thousand, sixty-one".

Divisors: 1 3 131 393 140677 422031 18428687 55286061