102215245 has 8 divisors (see below), whose sum is σ = 133809120. Its totient is φ = 74338320.

The previous prime is 102215233. The next prime is 102215249. The reversal of 102215245 is 542512201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102215245 - 2⁹ = 102214733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102215249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929175 + ... + 929284.

It is an arithmetic number, because the mean of its divisors is an integer number (16726140).

Almost surely, 2^102215245 is an apocalyptic number.

It is an amenable number.

102215245 is a deficient number, since it is larger than the sum of its proper divisors (31593875).

102215245 is a wasteful number, since it uses less digits than its factorization.

102215245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858475.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102215245 is about 10110.1555378738. The cubic root of 102215245 is about 467.5613005493.

Adding to 102215245 its reverse (542512201), we get a palindrome (644727446).

The spelling of 102215245 in words is "one hundred two million, two hundred fifteen thousand, two hundred forty-five".