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15113005 = 53022601
BaseRepresentation
bin111001101001…
…101100101101
31001102211010221
4321221230231
512332104010
61255531341
7242313145
oct71515455
931384127
1015113005
118592696
125089b51
133191c0b
142015925
1514d7dda
hexe69b2d

15113005 has 4 divisors (see below), whose sum is σ = 18135612. Its totient is φ = 12090400.

The previous prime is 15112997. The next prime is 15113009. The reversal of 15113005 is 50031151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50031151 = 154932299.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 11923209 = 1786^2 + 3453^2 .

It is not a de Polignac number, because 15113005 - 23 = 15112997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15113005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15113009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511296 + ... + 1511305.

It is an arithmetic number, because the mean of its divisors is an integer number (4533903).

Almost surely, 215113005 is an apocalyptic number.

It is an amenable number.

15113005 is a deficient number, since it is larger than the sum of its proper divisors (3022607).

15113005 is an equidigital number, since it uses as much as digits as its factorization.

15113005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022606.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 15113005 is about 3887.5448550467. The cubic root of 15113005 is about 247.2389793146.

Adding to 15113005 its reverse (50031151), we get a palindrome (65144156).

The spelling of 15113005 in words is "fifteen million, one hundred thirteen thousand, five".

Divisors: 1 5 3022601 15113005