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9551 is a prime number
BaseRepresentation
bin10010101001111
3111002202
42111033
5301201
6112115
736563
oct22517
914082
109551
1171a3
12563b
134469
1436a3
152c6b
hex254f

9551 has 2 divisors, whose sum is σ = 9552. Its totient is φ = 9550.

The previous prime is 9547. The next prime is 9587. The reversal of 9551 is 1559.

9551 is nontrivially palindromic in base 7.

9551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1559) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9551 - 22 = 9547 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 9551.

It is not a weakly prime, because it can be changed into another prime (9511) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4775 + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (4776).

29551 is an apocalyptic number.

9551 is a deficient number, since it is larger than the sum of its proper divisors (1).

9551 is an equidigital number, since it uses as much as digits as its factorization.

9551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225, while the sum is 20.

The square root of 9551 is about 97.7292177396. The cubic root of 9551 is about 21.2169497769.

The spelling of 9551 in words is "nine thousand, five hundred fifty-one".