102534561 has 6 divisors (see below), whose sum is σ = 148105490. Its totient is φ = 68356368.

The previous prime is 102534557. The next prime is 102534571. The reversal of 102534561 is 165435201.

It can be written as a sum of positive squares in only one way, i.e., 74909025 + 27625536 = 8655^2 + 5256^2 .

It is not a de Polignac number, because 102534561 - 2² = 102534557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102534541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5696356 + ... + 5696373.

Almost surely, 2^102534561 is an apocalyptic number.

It is an amenable number.

102534561 is a deficient number, since it is larger than the sum of its proper divisors (45570929).

102534561 is a wasteful number, since it uses less digits than its factorization.

102534561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11392735 (or 11392732 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 102534561 is about 10125.9350679332. The cubic root of 102534561 is about 468.0476748496.

Adding to 102534561 its reverse (165435201), we get a palindrome (267969762).

The spelling of 102534561 in words is "one hundred two million, five hundred thirty-four thousand, five hundred sixty-one".