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215054141 = 1997116687
BaseRepresentation
bin11001101000101…
…11011100111101
3112222122212211012
430310113130331
5420023213031
633201205005
75220634001
oct1464273475
9488585735
10215054141
111004353a5
1260030765
1335728493
14207c0701
1513d2eb2b
hexcd1773d

215054141 has 8 divisors (see below), whose sum is σ = 228708480. Its totient is φ = 201633408.

The previous prime is 215054087. The next prime is 215054153. The reversal of 215054141 is 141450512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-215054141 is a prime.

It is a super-2 number, since 2×2150541412 = 92496567122495762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215054041) 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 7 ways as a sum of consecutive naturals, for example, 56501 + ... + 60186.

It is an arithmetic number, because the mean of its divisors is an integer number (28588560).

Almost surely, 2215054141 is an apocalyptic number.

It is an amenable number.

215054141 is a deficient number, since it is larger than the sum of its proper divisors (13654339).

215054141 is a wasteful number, since it uses less digits than its factorization.

215054141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116803.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 215054141 is about 14664.7243751801. The cubic root of 215054141 is about 599.1229231480.

The spelling of 215054141 in words is "two hundred fifteen million, fifty-four thousand, one hundred forty-one".

Divisors: 1 19 97 1843 116687 2217053 11318639 215054141