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5115287 = 37138251
BaseRepresentation
bin10011100000110110010111
3100121212212002
4103200312113
52302142122
6301345515
761323242
oct23406627
910555762
105115287
112984211
12186829b
1310a13c8
14972259
156b0992
hex4e0d97

5115287 has 4 divisors (see below), whose sum is σ = 5253576. Its totient is φ = 4977000.

The previous prime is 5115259. The next prime is 5115301. The reversal of 5115287 is 7825115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7825115 = 51565023.

It is a cyclic number.

It is not a de Polignac number, because 5115287 - 214 = 5098903 is a prime.

It is a super-2 number, since 2×51152872 = 52332322184738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115247) 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, 69089 + ... + 69162.

It is an arithmetic number, because the mean of its divisors is an integer number (1313394).

Almost surely, 25115287 is an apocalyptic number.

5115287 is a deficient number, since it is larger than the sum of its proper divisors (138289).

5115287 is a wasteful number, since it uses less digits than its factorization.

5115287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138288.

The product of its digits is 2800, while the sum is 29.

The square root of 5115287 is about 2261.7000243180. The cubic root of 5115287 is about 172.3018743283.

The spelling of 5115287 in words is "five million, one hundred fifteen thousand, two hundred eighty-seven".

Divisors: 1 37 138251 5115287