102549091 has 2 divisors, whose sum is σ = 102549092. Its totient is φ = 102549090.

The previous prime is 102549047. The next prime is 102549107. The reversal of 102549091 is 190945201.

It is a strong prime.

It is an emirp because it is prime and its reverse (190945201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102549091 - 2²³ = 94160483 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (102541091) 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, 51274545 + 51274546.

It is an arithmetic number, because the mean of its divisors is an integer number (51274546).

Almost surely, 2^102549091 is an apocalyptic number.

102549091 is a deficient number, since it is larger than the sum of its proper divisors (1).

102549091 is an equidigital number, since it uses as much as digits as its factorization.

102549091 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 31.

The square root of 102549091 is about 10126.6525071220. The cubic root of 102549091 is about 468.0697825546.

The spelling of 102549091 in words is "one hundred two million, five hundred forty-nine thousand, ninety-one".