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2215153141 = 8532596897
BaseRepresentation
bin1000010000001000…
…1000110111110101
312201101012102211221
42010002020313311
514014034400031
61003450230341
7105615330265
oct20402106765
95641172757
102215153141
11a3743a383
12519a253b1
13293c08906
141702a37a5
15ce711a11
hex84088df5

2215153141 has 4 divisors (see below), whose sum is σ = 2217750892. Its totient is φ = 2212555392.

The previous prime is 2215153117. The next prime is 2215153147. The reversal of 2215153141 is 1413515122.

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 325946916 + 1889206225 = 18054^2 + 43465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215153141 - 213 = 2215144949 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 (2215153147) 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, 1297596 + ... + 1299301.

It is an arithmetic number, because the mean of its divisors is an integer number (554437723).

Almost surely, 22215153141 is an apocalyptic number.

It is an amenable number.

2215153141 is a deficient number, since it is larger than the sum of its proper divisors (2597751).

2215153141 is an equidigital number, since it uses as much as digits as its factorization.

2215153141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597750.

The product of its digits is 1200, while the sum is 25.

The square root of 2215153141 is about 47065.4134264217. The cubic root of 2215153141 is about 1303.5706846740.

Adding to 2215153141 its reverse (1413515122), we get a palindrome (3628668263).

The spelling of 2215153141 in words is "two billion, two hundred fifteen million, one hundred fifty-three thousand, one hundred forty-one".

Divisors: 1 853 2596897 2215153141