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5123161 = 25120411
BaseRepresentation
bin10011100010110001011001
3100122021122201
4103202301121
52302420121
6301450201
761355221
oct23426131
910567581
105123161
11298a11a
121870961
1310a4b74
14975081
156b2e91
hex4e2c59

5123161 has 4 divisors (see below), whose sum is σ = 5143824. Its totient is φ = 5102500.

The previous prime is 5123143. The next prime is 5123177. The reversal of 5123161 is 1613215.

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 5123161 - 211 = 5121113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5123191) 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, 9955 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (1285956).

Almost surely, 25123161 is an apocalyptic number.

It is an amenable number.

5123161 is a deficient number, since it is larger than the sum of its proper divisors (20663).

5123161 is a wasteful number, since it uses less digits than its factorization.

5123161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662.

The product of its digits is 180, while the sum is 19.

The square root of 5123161 is about 2263.4400809387. The cubic root of 5123161 is about 172.3902375309.

Adding to 5123161 its reverse (1613215), we get a palindrome (6736376).

The spelling of 5123161 in words is "five million, one hundred twenty-three thousand, one hundred sixty-one".

Divisors: 1 251 20411 5123161