102199541 has 2 divisors, whose sum is σ = 102199542. Its totient is φ = 102199540.

The previous prime is 102199457. The next prime is 102199543. The reversal of 102199541 is 145991201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95844100 + 6355441 = 9790^2 + 2521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102199541 is a prime.

It is a super-2 number, since 2×102199541² = 20889492361221362, which contains 22 as substring.

Together with 102199543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102199498 and 102199507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102199543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51099770 + 51099771.

It is an arithmetic number, because the mean of its divisors is an integer number (51099771).

Almost surely, 2^102199541 is an apocalyptic number.

It is an amenable number.

102199541 is a deficient number, since it is larger than the sum of its proper divisors (1).

102199541 is an equidigital number, since it uses as much as digits as its factorization.

102199541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 102199541 is about 10109.3788632141. The cubic root of 102199541 is about 467.5373544842.

It can be divided in two parts, 10219 and 9541, that multiplied together give a palindrome (97499479).

The spelling of 102199541 in words is "one hundred two million, one hundred ninety-nine thousand, five hundred forty-one".