102315556 has 24 divisors (see below), whose sum is σ = 205865856. Its totient is φ = 43584960.

The previous prime is 102315553. The next prime is 102315581. The reversal of 102315556 is 655513201.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (102315553) 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 7 ways as a sum of consecutive naturals, for example, 6265 + ... + 15616.

It is an arithmetic number, because the mean of its divisors is an integer number (8577744).

Almost surely, 2^102315556 is an apocalyptic number.

It is an amenable number.

102315556 is an abundant number, since it is smaller than the sum of its proper divisors (103550300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102315556 is a wasteful number, since it uses less digits than its factorization.

102315556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22059 (or 22057 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 102315556 is about 10115.1152242572. The cubic root of 102315556 is about 467.7142007922.

Adding to 102315556 its reverse (655513201), we get a palindrome (757828757).

The spelling of 102315556 in words is "one hundred two million, three hundred fifteen thousand, five hundred fifty-six".