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80150221 = 312585491
BaseRepresentation
bin1001100011011…
…11111011001101
312120211001102201
410301233323031
5131004301341
611541521501
71662160054
oct461577315
9176731381
1080150221
1141274058
1222a13291
13137b3888
14a90539b
157083331
hex4c6fecd

80150221 has 4 divisors (see below), whose sum is σ = 82735744. Its totient is φ = 77564700.

The previous prime is 80150219. The next prime is 80150233. The reversal of 80150221 is 12205108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80150221 - 21 = 80150219 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 (80150201) 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 3 ways as a sum of consecutive naturals, for example, 1292715 + ... + 1292776.

It is an arithmetic number, because the mean of its divisors is an integer number (20683936).

Almost surely, 280150221 is an apocalyptic number.

It is an amenable number.

80150221 is a deficient number, since it is larger than the sum of its proper divisors (2585523).

80150221 is a wasteful number, since it uses less digits than its factorization.

80150221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585522.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 80150221 is about 8952.6655807084. The cubic root of 80150221 is about 431.1564704820.

Adding to 80150221 its reverse (12205108), we get a palindrome (92355329).

The spelling of 80150221 in words is "eighty million, one hundred fifty thousand, two hundred twenty-one".

Divisors: 1 31 2585491 80150221