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50989 is a prime number
BaseRepresentation
bin1100011100101101
32120221111
430130231
53112424
61032021
7301441
oct143455
976844
1050989
1135344
1225611
131a293
1414821
1510194
hexc72d

50989 has 2 divisors, whose sum is σ = 50990. Its totient is φ = 50988.

The previous prime is 50971. The next prime is 50993. The reversal of 50989 is 98905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44100 + 6889 = 210^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 50989 - 25 = 50957 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 50989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25494 + 25495.

It is an arithmetic number, because the mean of its divisors is an integer number (25495).

250989 is an apocalyptic number.

It is an amenable number.

50989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50989 is an equidigital number, since it uses as much as digits as its factorization.

50989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 50989 is about 225.8074400900. The cubic root of 50989 is about 37.0816313096.

The spelling of 50989 in words is "fifty thousand, nine hundred eighty-nine".