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2152052231 = 71971560589
BaseRepresentation
bin1000000001000101…
…1011011000000111
312112222110120200012
42000101123120013
513401411132411
6553313540435
7104221066520
oct20021333007
95488416605
102152052231
11a0486076a
1250087471b
13283b143b4
14165b59847
15c8dea18b
hex8045b607

2152052231 has 8 divisors (see below), whose sum is σ = 2471974560. Its totient is φ = 1835251488.

The previous prime is 2152052183. The next prime is 2152052237. The reversal of 2152052231 is 1322502512.

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

It is not a de Polignac number, because 2152052231 - 26 = 2152052167 is a prime.

It is a super-2 number, since 2×21520522312 = 9262657609904154722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2152052197 and 2152052206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152052237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778916 + ... + 781673.

It is an arithmetic number, because the mean of its divisors is an integer number (308996820).

Almost surely, 22152052231 is an apocalyptic number.

2152052231 is a deficient number, since it is larger than the sum of its proper divisors (319922329).

2152052231 is a wasteful number, since it uses less digits than its factorization.

2152052231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560793.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2152052231 is about 46390.2169751339. The cubic root of 2152052231 is about 1291.0734071946.

Adding to 2152052231 its reverse (1322502512), we get a palindrome (3474554743).

The spelling of 2152052231 in words is "two billion, one hundred fifty-two million, fifty-two thousand, two hundred thirty-one".

Divisors: 1 7 197 1379 1560589 10924123 307436033 2152052231