102661530 has 32 divisors (see below), whose sum is σ = 251040384. Its totient is φ = 26859456.

The previous prime is 102661529. The next prime is 102661543. The reversal of 102661530 is 35166201.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102661530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30694 + ... + 33873.

It is an arithmetic number, because the mean of its divisors is an integer number (7845012).

Almost surely, 2^102661530 is an apocalyptic number.

102661530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102661530 is an abundant number, since it is smaller than the sum of its proper divisors (148378854).

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

102661530 is a wasteful number, since it uses less digits than its factorization.

102661530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64630.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 102661530 is about 10132.2026233194. The cubic root of 102661530 is about 468.2407903276.

The spelling of 102661530 in words is "one hundred two million, six hundred sixty-one thousand, five hundred thirty".