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905097005 = 5181019401
BaseRepresentation
bin110101111100101…
…010111100101101
32100002002200200022
4311330222330231
53323201101010
6225451211525
731300124531
oct6574527455
92302080608
10905097005
114249a385a
12213146ba5
1311568c677
14882c5bc1
15546d6d55
hex35f2af2d

905097005 has 4 divisors (see below), whose sum is σ = 1086116412. Its totient is φ = 724077600.

The previous prime is 905096999. The next prime is 905097007. The reversal of 905097005 is 500790509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500790509 = 761658069.

It can be written as a sum of positive squares in 2 ways, for example, as 707666404 + 197430601 = 26602^2 + 14051^2 .

It is not a de Polignac number, because 905097005 - 210 = 905095981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905097007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90509696 + ... + 90509705.

It is an arithmetic number, because the mean of its divisors is an integer number (271529103).

Almost surely, 2905097005 is an apocalyptic number.

It is an amenable number.

905097005 is a deficient number, since it is larger than the sum of its proper divisors (181019407).

905097005 is a wasteful number, since it uses less digits than its factorization.

905097005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181019406.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 905097005 is about 30084.8301474348. The cubic root of 905097005 is about 967.3085858573.

The spelling of 905097005 in words is "nine hundred five million, ninety-seven thousand, five".

Divisors: 1 5 181019401 905097005