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163224661 is a prime number
BaseRepresentation
bin10011011101010…
…01110001010101
3102101010200010211
421232221301111
5313241142121
624110245421
74021246435
oct1156516125
9371120124
10163224661
1184155116
12467b6871
1327a7c452
141796c2c5
15e4e2ce1
hex9ba9c55

163224661 has 2 divisors, whose sum is σ = 163224662. Its totient is φ = 163224660.

The previous prime is 163224643. The next prime is 163224671. The reversal of 163224661 is 166422361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161442436 + 1782225 = 12706^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 163224661 - 211 = 163222613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163224601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81612330 + 81612331.

It is an arithmetic number, because the mean of its divisors is an integer number (81612331).

Almost surely, 2163224661 is an apocalyptic number.

It is an amenable number.

163224661 is a deficient number, since it is larger than the sum of its proper divisors (1).

163224661 is an equidigital number, since it uses as much as digits as its factorization.

163224661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 163224661 is about 12775.9407090046. The cubic root of 163224661 is about 546.5064078042.

The spelling of 163224661 in words is "one hundred sixty-three million, two hundred twenty-four thousand, six hundred sixty-one".