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155234361 = 31729104959
BaseRepresentation
bin10010100000010…
…11000000111001
3101211002201111210
421100023000321
5304214444421
623223113333
73563320212
oct1120130071
9354081453
10155234361
117a697967
1243ba2849
1326212569
141688c409
15d965576
hex940b039

155234361 has 16 divisors (see below), whose sum is σ = 226713600. Its totient is φ = 94042368.

The previous prime is 155234357. The next prime is 155234381. The reversal of 155234361 is 163432551.

It is not a de Polignac number, because 155234361 - 22 = 155234357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155234381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51001 + ... + 53958.

It is an arithmetic number, because the mean of its divisors is an integer number (14169600).

Almost surely, 2155234361 is an apocalyptic number.

It is an amenable number.

155234361 is a deficient number, since it is larger than the sum of its proper divisors (71479239).

155234361 is a wasteful number, since it uses less digits than its factorization.

155234361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105008.

The product of its digits is 10800, while the sum is 30.

The square root of 155234361 is about 12459.3082071197. The cubic root of 155234361 is about 537.4391332555.

The spelling of 155234361 in words is "one hundred fifty-five million, two hundred thirty-four thousand, three hundred sixty-one".

Divisors: 1 3 17 29 51 87 493 1479 104959 314877 1784303 3043811 5352909 9131433 51744787 155234361