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155245130 = 2515524513
BaseRepresentation
bin10010100000011…
…01101001001010
3101211010021021122
421100031221022
5304220321010
623223235242
73563363465
oct1120155112
9354107248
10155245130
117a6a4a67
1243ba8b22
1326217431
14168922dc
15d968855
hex940da4a

155245130 has 8 divisors (see below), whose sum is σ = 279441252. Its totient is φ = 62098048.

The previous prime is 155245127. The next prime is 155245141. The reversal of 155245130 is 31542551.

It can be written as a sum of positive squares in 2 ways, for example, as 153536881 + 1708249 = 12391^2 + 1307^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 155245130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7762247 + ... + 7762266.

Almost surely, 2155245130 is an apocalyptic number.

155245130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155245130 is a deficient number, since it is larger than the sum of its proper divisors (124196122).

155245130 is a wasteful number, since it uses less digits than its factorization.

155245130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15524520.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155245130 is about 12459.7403664763. The cubic root of 155245130 is about 537.4515608052.

Adding to 155245130 its reverse (31542551), we get a palindrome (186787681).

The spelling of 155245130 in words is "one hundred fifty-five million, two hundred forty-five thousand, one hundred thirty".

Divisors: 1 2 5 10 15524513 31049026 77622565 155245130