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52003231 = 728326251
BaseRepresentation
bin1100011001100…
…0000110011111
310121212001000121
43012120012133
5101303100411
65054335411
71201006630
oct306300637
9117761017
1052003231
1127399885
12154ba567
13aa0a157
146c99887
154873571
hex319819f

52003231 has 8 divisors (see below), whose sum is σ = 59644544. Its totient is φ = 44415000.

The previous prime is 52003219. The next prime is 52003307. The reversal of 52003231 is 13230025.

52003231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52003231 - 225 = 18448799 is a prime.

It is a super-2 number, since 2×520032312 = 5408672068878722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52003631) 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 7 ways as a sum of consecutive naturals, for example, 11145 + ... + 15106.

It is an arithmetic number, because the mean of its divisors is an integer number (7455568).

Almost surely, 252003231 is an apocalyptic number.

52003231 is a deficient number, since it is larger than the sum of its proper divisors (7641313).

52003231 is a wasteful number, since it uses less digits than its factorization.

52003231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26541.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 52003231 is about 7211.3265769898. The cubic root of 52003231 is about 373.2588461265.

Adding to 52003231 its reverse (13230025), we get a palindrome (65233256).

The spelling of 52003231 in words is "fifty-two million, three thousand, two hundred thirty-one".

Divisors: 1 7 283 1981 26251 183757 7429033 52003231