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15135245 = 529104381
BaseRepresentation
bin111001101111…
…001000001101
31001110221122122
4321233020031
512333311440
61300222325
7242435036
oct71571015
931427578
1015135245
1185a8374
12509a9a5
13319c088
14201da8d
1514de7b5
hexe6f20d

15135245 has 8 divisors (see below), whose sum is σ = 18788760. Its totient is φ = 11690560.

The previous prime is 15135227. The next prime is 15135301. The reversal of 15135245 is 54253151.

It can be written as a sum of positive squares in 4 ways, for example, as 2758921 + 12376324 = 1661^2 + 3518^2 .

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

It is not a de Polignac number, because 15135245 - 26 = 15135181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52046 + ... + 52335.

It is an arithmetic number, because the mean of its divisors is an integer number (2348595).

Almost surely, 215135245 is an apocalyptic number.

It is an amenable number.

15135245 is a deficient number, since it is larger than the sum of its proper divisors (3653515).

15135245 is a wasteful number, since it uses less digits than its factorization.

15135245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104415.

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

The square root of 15135245 is about 3890.4042206434. The cubic root of 15135245 is about 247.3601972082.

Adding to 15135245 its reverse (54253151), we get a palindrome (69388396).

The spelling of 15135245 in words is "fifteen million, one hundred thirty-five thousand, two hundred forty-five".

Divisors: 1 5 29 145 104381 521905 3027049 15135245