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252230215 = 550446043
BaseRepresentation
bin11110000100010…
…11101001000111
3122120121121210211
433002023221013
51004032331330
641010100251
76151631026
oct1702135107
9576547724
10252230215
1111a417326
127057a687
1340343863
14256da8bd
1517224d2a
hexf08ba47

252230215 has 4 divisors (see below), whose sum is σ = 302676264. Its totient is φ = 201784168.

The previous prime is 252230191. The next prime is 252230219. The reversal of 252230215 is 512032252.

252230215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 252230215 - 213 = 252222023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252230219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25223017 + ... + 25223026.

It is an arithmetic number, because the mean of its divisors is an integer number (75669066).

Almost surely, 2252230215 is an apocalyptic number.

252230215 is a deficient number, since it is larger than the sum of its proper divisors (50446049).

252230215 is an equidigital number, since it uses as much as digits as its factorization.

252230215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50446048.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 252230215 is about 15881.7573020116. The cubic root of 252230215 is about 631.8282452345.

Adding to 252230215 its reverse (512032252), we get a palindrome (764262467).

The spelling of 252230215 in words is "two hundred fifty-two million, two hundred thirty thousand, two hundred fifteen".

Divisors: 1 5 50446043 252230215