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5131001 = 23223087
BaseRepresentation
bin10011100100101011111001
3100122200102002
4103210223321
52303143001
6301550345
761420121
oct23445371
910580362
105131001
112994aa7
1218753b5
1310a85c5
14977c81
156b546b
hex4e4af9

5131001 has 4 divisors (see below), whose sum is σ = 5354112. Its totient is φ = 4907892.

The previous prime is 5130997. The next prime is 5131013. The reversal of 5131001 is 1001315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5131001 - 22 = 5130997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131081) by changing a digit.

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, 111521 + ... + 111566.

It is an arithmetic number, because the mean of its divisors is an integer number (1338528).

Almost surely, 25131001 is an apocalyptic number.

It is an amenable number.

5131001 is a deficient number, since it is larger than the sum of its proper divisors (223111).

5131001 is a wasteful number, since it uses less digits than its factorization.

5131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223110.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 5131001 is about 2265.1712959509. The cubic root of 5131001 is about 172.4781292723.

Adding to 5131001 its reverse (1001315), we get a palindrome (6132316).

The spelling of 5131001 in words is "five million, one hundred thirty-one thousand, one".

Divisors: 1 23 223087 5131001