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151438211 = 721121001
BaseRepresentation
bin10010000011011…
…00001110000011
3101112221212011122
421001230032003
5302232010321
623005502455
73516126551
oct1101541603
9345855148
10151438211
1178534851
1242871a2b
13254b3712
1416180bd1
15d4658ab
hex906c383

151438211 has 4 divisors (see below), whose sum is σ = 151466424. Its totient is φ = 151410000.

The previous prime is 151438207. The next prime is 151438219. The reversal of 151438211 is 112834151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112834151 = 176637303.

It is a cyclic number.

It is not a de Polignac number, because 151438211 - 22 = 151438207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151438219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290 + ... + 17711.

It is an arithmetic number, because the mean of its divisors is an integer number (37866606).

Almost surely, 2151438211 is an apocalyptic number.

151438211 is a deficient number, since it is larger than the sum of its proper divisors (28213).

151438211 is an equidigital number, since it uses as much as digits as its factorization.

151438211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28212.

The product of its digits is 960, while the sum is 26.

The square root of 151438211 is about 12306.0233625652. The cubic root of 151438211 is about 533.0220273977.

The spelling of 151438211 in words is "one hundred fifty-one million, four hundred thirty-eight thousand, two hundred eleven".

Divisors: 1 7211 21001 151438211