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215141153 = 1931114721
BaseRepresentation
bin11001101001011…
…00101100100001
3112222211022011212
430310230230201
5420034004103
633203115505
75221445453
oct1464545441
9488738155
10215141153
11100494807
1260072b95
1335758c76
14208042d3
1513d4a7d8
hexcd2cb21

215141153 has 4 divisors (see below), whose sum is σ = 216256068. Its totient is φ = 214026240.

The previous prime is 215141141. The next prime is 215141159. The reversal of 215141153 is 351141512.

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 22819729 + 192321424 = 4777^2 + 13868^2 .

It is a cyclic number.

It is not a de Polignac number, because 215141153 - 210 = 215140129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215141159) 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, 557168 + ... + 557553.

It is an arithmetic number, because the mean of its divisors is an integer number (54064017).

Almost surely, 2215141153 is an apocalyptic number.

It is an amenable number.

215141153 is a deficient number, since it is larger than the sum of its proper divisors (1114915).

215141153 is a wasteful number, since it uses less digits than its factorization.

215141153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114914.

The product of its digits is 600, while the sum is 23.

The square root of 215141153 is about 14667.6907862144. The cubic root of 215141153 is about 599.2037149807.

Adding to 215141153 its reverse (351141512), we get a palindrome (566282665).

The spelling of 215141153 in words is "two hundred fifteen million, one hundred forty-one thousand, one hundred fifty-three".

Divisors: 1 193 1114721 215141153