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15379085 = 53075817
BaseRepresentation
bin111010101010…
…101010001101
31001221100010202
4322222222031
512414112320
61305343245
7244501661
oct72525215
931840122
1015379085
118754597
125197b25
133256067
1420848a1
15153bb75
hexeaaa8d

15379085 has 4 divisors (see below), whose sum is σ = 18454908. Its totient is φ = 12303264.

The previous prime is 15379061. The next prime is 15379093. The reversal of 15379085 is 58097351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58097351 = 134469027.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 12292036 = 1757^2 + 3506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15379085 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 1537904 + ... + 1537913.

It is an arithmetic number, because the mean of its divisors is an integer number (4613727).

Almost surely, 215379085 is an apocalyptic number.

It is an amenable number.

15379085 is a deficient number, since it is larger than the sum of its proper divisors (3075823).

15379085 is an equidigital number, since it uses as much as digits as its factorization.

15379085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075822.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 15379085 is about 3921.6176509191. The cubic root of 15379085 is about 248.6815119144.

The spelling of 15379085 in words is "fifteen million, three hundred seventy-nine thousand, eighty-five".

Divisors: 1 5 3075817 15379085