102530785 has 12 divisors (see below), whose sum is σ = 143124948. Its totient is φ = 70306656.

The previous prime is 102530777. The next prime is 102530789. The reversal of 102530785 is 587035201.

It can be written as a sum of positive squares in 2 ways, for example, as 66961489 + 35569296 = 8183^2 + 5964^2 .

It is not a de Polignac number, because 102530785 - 2³ = 102530777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102530789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209002 + ... + 209491.

It is an arithmetic number, because the mean of its divisors is an integer number (11927079).

Almost surely, 2^102530785 is an apocalyptic number.

It is an amenable number.

102530785 is a deficient number, since it is larger than the sum of its proper divisors (40594163).

102530785 is an equidigital number, since it uses as much as digits as its factorization.

102530785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418512 (or 418505 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 102530785 is about 10125.7486143001. The cubic root of 102530785 is about 468.0419292431.

Adding to 102530785 its reverse (587035201), we get a palindrome (689565986).

The spelling of 102530785 in words is "one hundred two million, five hundred thirty thousand, seven hundred eighty-five".