108642545 has 32 divisors (see below), whose sum is σ = 147350016. Its totient is φ = 76204800.

The previous prime is 108642517. The next prime is 108642641. The reversal of 108642545 is 545246801.

It is not a de Polignac number, because 108642545 - 2¹⁶ = 108577009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400760 + ... + 401030.

It is an arithmetic number, because the mean of its divisors is an integer number (4604688).

Almost surely, 2^108642545 is an apocalyptic number.

It is an amenable number.

108642545 is a deficient number, since it is larger than the sum of its proper divisors (38707471).

108642545 is a wasteful number, since it uses less digits than its factorization.

108642545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 108642545 is about 10423.1734610914. The cubic root of 108642545 is about 477.1628715978.

The spelling of 108642545 in words is "one hundred eight million, six hundred forty-two thousand, five hundred forty-five".