102471217 has 4 divisors (see below), whose sum is σ = 103208560. Its totient is φ = 101733876.

The previous prime is 102471211. The next prime is 102471251. The reversal of 102471217 is 712174201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102471217 - 2¹⁵ = 102438449 is a prime.

It is a super-2 number, since 2×102471217² = 21000700626922178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102471191 and 102471200.

It is not an unprimeable number, because it can be changed into a prime (102471211) 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, 368463 + ... + 368740.

It is an arithmetic number, because the mean of its divisors is an integer number (25802140).

Almost surely, 2^102471217 is an apocalyptic number.

It is an amenable number.

102471217 is a deficient number, since it is larger than the sum of its proper divisors (737343).

102471217 is an equidigital number, since it uses as much as digits as its factorization.

102471217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737342.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 102471217 is about 10122.8067748031. The cubic root of 102471217 is about 467.9512711945.

The spelling of 102471217 in words is "one hundred two million, four hundred seventy-one thousand, two hundred seventeen".