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109168901 is a prime number
BaseRepresentation
bin1101000000111…
…00100100000101
321121102100120122
412200130210011
5210421401101
614455511325
72463630452
oct640344405
9247370518
10109168901
1156694236
1230688545
1319803caa
14106da829
1598b651b
hex681c905

109168901 has 2 divisors, whose sum is σ = 109168902. Its totient is φ = 109168900.

The previous prime is 109168877. The next prime is 109168973. The reversal of 109168901 is 109861901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75238276 + 33930625 = 8674^2 + 5825^2 .

It is an emirp because it is prime and its reverse (109861901) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 106891601 and 106198601.

It is a cyclic number.

It is not a de Polignac number, because 109168901 - 26 = 109168837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p6258293 and since 109168901 and 6258293 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109168991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54584450 + 54584451.

It is an arithmetic number, because the mean of its divisors is an integer number (54584451).

Almost surely, 2109168901 is an apocalyptic number.

It is an amenable number.

109168901 is a deficient number, since it is larger than the sum of its proper divisors (1).

109168901 is an equidigital number, since it uses as much as digits as its factorization.

109168901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 109168901 is about 10448.3922686699. The cubic root of 109168901 is about 477.9322234277.

The spelling of 109168901 in words is "one hundred nine million, one hundred sixty-eight thousand, nine hundred one".