Search a number
-
+
7528201 = 71106031
BaseRepresentation
bin11100101101111100001001
3112011110202021
4130231330021
53411400301
6425204441
7120663052
oct34557411
915143667
107528201
11428205a
122630721
131737775
14ddd729
159da8a1
hex72df09

7528201 has 4 divisors (see below), whose sum is σ = 7634304. Its totient is φ = 7422100.

The previous prime is 7528151. The next prime is 7528207. The reversal of 7528201 is 1028257.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1028257 = 2574001.

It is a cyclic number.

It is not a de Polignac number, because 7528201 - 211 = 7526153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7528207) 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, 52945 + ... + 53086.

It is an arithmetic number, because the mean of its divisors is an integer number (1908576).

Almost surely, 27528201 is an apocalyptic number.

7528201 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7528201 is a deficient number, since it is larger than the sum of its proper divisors (106103).

7528201 is a wasteful number, since it uses less digits than its factorization.

7528201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106102.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7528201 is about 2743.7567311990. The cubic root of 7528201 is about 195.9884156002.

The spelling of 7528201 in words is "seven million, five hundred twenty-eight thousand, two hundred one".

Divisors: 1 71 106031 7528201