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232520201 = 472949169
BaseRepresentation
bin11011101101111…
…11101000001001
3121012112020202022
431312333220021
5434011121301
635023414225
75522250314
oct1566775011
9535466668
10232520201
1110a284961
1265a54375
1339232424
1422c4997b
151562ed1b
hexddbfa09

232520201 has 4 divisors (see below), whose sum is σ = 232574100. Its totient is φ = 232466304.

The previous prime is 232520191. The next prime is 232520209. The reversal of 232520201 is 102025232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65593801 + 166926400 = 8099^2 + 12920^2 .

It is a cyclic number.

It is not a de Polignac number, because 232520201 - 26 = 232520137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 232520201.

It is not an unprimeable number, because it can be changed into a prime (232520209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19856 + ... + 29313.

It is an arithmetic number, because the mean of its divisors is an integer number (58143525).

Almost surely, 2232520201 is an apocalyptic number.

It is an amenable number.

232520201 is a deficient number, since it is larger than the sum of its proper divisors (53899).

232520201 is an equidigital number, since it uses as much as digits as its factorization.

232520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53898.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 232520201 is about 15248.6130844743. The cubic root of 232520201 is about 614.9222815841.

Adding to 232520201 its reverse (102025232), we get a palindrome (334545433).

The spelling of 232520201 in words is "two hundred thirty-two million, five hundred twenty thousand, two hundred one".

Divisors: 1 4729 49169 232520201