102644291 has 4 divisors (see below), whose sum is σ = 102664584. Its totient is φ = 102624000.

The previous prime is 102644237. The next prime is 102644299. The reversal of 102644291 is 192446201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192446201 = 9461 ⋅20341.

It is a cyclic number.

It is not a de Polignac number, because 102644291 - 2¹⁴ = 102627907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102644299) 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 in 3 ways as a sum of consecutive naturals, for example, 4256 + ... + 14946.

It is an arithmetic number, because the mean of its divisors is an integer number (25666146).

Almost surely, 2^102644291 is an apocalyptic number.

102644291 is a deficient number, since it is larger than the sum of its proper divisors (20293).

102644291 is an equidigital number, since it uses as much as digits as its factorization.

102644291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20292.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 102644291 is about 10131.3518841268. The cubic root of 102644291 is about 468.2145797473.

The spelling of 102644291 in words is "one hundred two million, six hundred forty-four thousand, two hundred ninety-one".