102245771 has 4 divisors (see below), whose sum is σ = 103646472. Its totient is φ = 100845072.

The previous prime is 102245753. The next prime is 102245789. The reversal of 102245771 is 177542201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177542201 = 1049 ⋅169249.

It is an interprime number because it is at equal distance from previous prime (102245753) and next prime (102245789).

It is a cyclic number.

It is not a de Polignac number, because 102245771 - 2²² = 98051467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102245071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700241 + ... + 700386.

It is an arithmetic number, because the mean of its divisors is an integer number (25911618).

Almost surely, 2^102245771 is an apocalyptic number.

102245771 is a deficient number, since it is larger than the sum of its proper divisors (1400701).

102245771 is an equidigital number, since it uses as much as digits as its factorization.

102245771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400700.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 102245771 is about 10111.6650953243. The cubic root of 102245771 is about 467.6078407552.

Adding to 102245771 its reverse (177542201), we get a palindrome (279787972).

The spelling of 102245771 in words is "one hundred two million, two hundred forty-five thousand, seven hundred seventy-one".