102532545 has 24 divisors (see below), whose sum is σ = 183853800. Its totient is φ = 52797696.

The previous prime is 102532543. The next prime is 102532553. The reversal of 102532545 is 545235201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40564161 + 61968384 = 6369^2 + 7872^2 .

It is not a de Polignac number, because 102532545 - 2¹ = 102532543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102532541) 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 23 ways as a sum of consecutive naturals, for example, 37980 + ... + 40589.

It is an arithmetic number, because the mean of its divisors is an integer number (7660575).

Almost surely, 2^102532545 is an apocalyptic number.

102532545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102532545 is a deficient number, since it is larger than the sum of its proper divisors (81321255).

102532545 is a wasteful number, since it uses less digits than its factorization.

102532545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78609 (or 78606 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 102532545 is about 10125.8355210817. The cubic root of 102532545 is about 468.0446072976.

Adding to 102532545 its reverse (545235201), we get a palindrome (647767746).

The spelling of 102532545 in words is "one hundred two million, five hundred thirty-two thousand, five hundred forty-five".