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131553055 = 5171981457
BaseRepresentation
bin1111101011101…
…01011100011111
3100011112120212101
413311311130133
5232134144210
621015345531
73155116414
oct765653437
9304476771
10131553055
1168292837
12380822a7
132134065a
141368610b
15b838a3a
hex7d7571f

131553055 has 16 divisors (see below), whose sum is σ = 175949280. Its totient is φ = 93837312.

The previous prime is 131553053. The next prime is 131553061. The reversal of 131553055 is 550355131.

It is a cyclic number.

It is not a de Polignac number, because 131553055 - 21 = 131553053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131553053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39114 + ... + 42343.

It is an arithmetic number, because the mean of its divisors is an integer number (10996830).

Almost surely, 2131553055 is an apocalyptic number.

131553055 is a deficient number, since it is larger than the sum of its proper divisors (44396225).

131553055 is a wasteful number, since it uses less digits than its factorization.

131553055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81498.

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 131553055 is about 11469.6580158259. The cubic root of 131553055 is about 508.5890193303.

The spelling of 131553055 in words is "one hundred thirty-one million, five hundred fifty-three thousand, fifty-five".

Divisors: 1 5 17 19 85 95 323 1615 81457 407285 1384769 1547683 6923845 7738415 26310611 131553055