102287247 has 4 divisors (see below), whose sum is σ = 136383000. Its totient is φ = 68191496.

The previous prime is 102287243. The next prime is 102287257. The reversal of 102287247 is 742782201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102287247 - 2² = 102287243 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102287243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17047872 + ... + 17047877.

It is an arithmetic number, because the mean of its divisors is an integer number (34095750).

Almost surely, 2^102287247 is an apocalyptic number.

102287247 is a deficient number, since it is larger than the sum of its proper divisors (34095753).

102287247 is an equidigital number, since it uses as much as digits as its factorization.

102287247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34095752.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 102287247 is about 10113.7157860007. The cubic root of 102287247 is about 467.6710605857.

The spelling of 102287247 in words is "one hundred two million, two hundred eighty-seven thousand, two hundred forty-seven".