102247549 has 2 divisors, whose sum is σ = 102247550. Its totient is φ = 102247548.

The previous prime is 102247463. The next prime is 102247583. The reversal of 102247549 is 945742201.

It is an a-pointer prime, because the next prime (102247583) can be obtained adding 102247549 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102151449 + 96100 = 10107^2 + 310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102247549 is a prime.

It is a super-2 number, since 2×102247549² = 20909122553014802, which contains 22 as substring.

It is equal to p_5883451 and since 102247549 and 5883451 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 (102247589) 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, 51123774 + 51123775.

It is an arithmetic number, because the mean of its divisors is an integer number (51123775).

Almost surely, 2^102247549 is an apocalyptic number.

It is an amenable number.

102247549 is a deficient number, since it is larger than the sum of its proper divisors (1).

102247549 is an equidigital number, since it uses as much as digits as its factorization.

102247549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 102247549 is about 10111.7530132020. The cubic root of 102247549 is about 467.6105512241.

The spelling of 102247549 in words is "one hundred two million, two hundred forty-seven thousand, five hundred forty-nine".