102351661 has 2 divisors, whose sum is σ = 102351662. Its totient is φ = 102351660.

The previous prime is 102351659. The next prime is 102351673. The reversal of 102351661 is 166153201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 31472100 = 8419^2 + 5610^2 .

It is an emirp because it is prime and its reverse (166153201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102351661 - 2¹ = 102351659 is a prime.

Together with 102351659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102351631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51175830 + 51175831.

It is an arithmetic number, because the mean of its divisors is an integer number (51175831).

Almost surely, 2^102351661 is an apocalyptic number.

It is an amenable number.

102351661 is a deficient number, since it is larger than the sum of its proper divisors (1).

102351661 is an equidigital number, since it uses as much as digits as its factorization.

102351661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 102351661 is about 10116.8997721634. The cubic root of 102351661 is about 467.7692098118.

The spelling of 102351661 in words is "one hundred two million, three hundred fifty-one thousand, six hundred sixty-one".