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10842505 = 52168501
BaseRepresentation
bin101001010111…
…000110001001
3202101212010021
4221113012021
510233430010
61024220441
7161105542
oct51270611
922355107
1010842505
116136153
12376a721
1323281ab
1416234c9
15e428da
hexa57189

10842505 has 4 divisors (see below), whose sum is σ = 13011012. Its totient is φ = 8674000.

The previous prime is 10842487. The next prime is 10842509. The reversal of 10842505 is 50524801.

10842505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50524801 = 63180071.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 8982009 = 1364^2 + 2997^2 .

It is not a de Polignac number, because 10842505 - 211 = 10840457 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 10842505.

It is not an unprimeable number, because it can be changed into a prime (10842509) by changing a digit.

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, 1084246 + ... + 1084255.

It is an arithmetic number, because the mean of its divisors is an integer number (3252753).

Almost surely, 210842505 is an apocalyptic number.

It is an amenable number.

10842505 is a deficient number, since it is larger than the sum of its proper divisors (2168507).

10842505 is an equidigital number, since it uses as much as digits as its factorization.

10842505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168506.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 10842505 is about 3292.7959244387. The cubic root of 10842505 is about 221.3314913618.

The spelling of 10842505 in words is "ten million, eight hundred forty-two thousand, five hundred five".

Divisors: 1 5 2168501 10842505