102661529 has 2 divisors, whose sum is σ = 102661530. Its totient is φ = 102661528.

The previous prime is 102661459. The next prime is 102661543. The reversal of 102661529 is 925166201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 12411529 = 9500^2 + 3523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102661529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102661495 and 102661504.

It is not a weakly prime, because it can be changed into another prime (102661549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51330764 + 51330765.

It is an arithmetic number, because the mean of its divisors is an integer number (51330765).

Almost surely, 2^102661529 is an apocalyptic number.

It is an amenable number.

102661529 is a deficient number, since it is larger than the sum of its proper divisors (1).

102661529 is an equidigital number, since it uses as much as digits as its factorization.

102661529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 102661529 is about 10132.2025739718. The cubic root of 102661529 is about 468.2407888073.

The spelling of 102661529 in words is "one hundred two million, six hundred sixty-one thousand, five hundred twenty-nine".