102132545 has 4 divisors (see below), whose sum is σ = 122559060. Its totient is φ = 81706032.

The previous prime is 102132539. The next prime is 102132553. The reversal of 102132545 is 545231201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545231201 = 19 ⋅28696379.

It can be written as a sum of positive squares in 2 ways, for example, as 18939904 + 83192641 = 4352^2 + 9121^2 .

It is a cyclic number.

It is not a de Polignac number, because 102132545 - 2⁴ = 102132529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102132545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10213250 + ... + 10213259.

It is an arithmetic number, because the mean of its divisors is an integer number (30639765).

Almost surely, 2^102132545 is an apocalyptic number.

It is an amenable number.

102132545 is a deficient number, since it is larger than the sum of its proper divisors (20426515).

102132545 is an equidigital number, since it uses as much as digits as its factorization.

102132545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20426514.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102132545 is about 10106.0647632993. The cubic root of 102132545 is about 467.4351688340.

Adding to 102132545 its reverse (545231201), we get a palindrome (647363746).

The spelling of 102132545 in words is "one hundred two million, one hundred thirty-two thousand, five hundred forty-five".