102166545 has 32 divisors (see below), whose sum is σ = 181730304. Its totient is φ = 48672000.

The previous prime is 102166541. The next prime is 102166567. The reversal of 102166545 is 545661201.

It is not a de Polignac number, because 102166545 - 2² = 102166541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102166541) 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 31 ways as a sum of consecutive naturals, for example, 2406 + ... + 14495.

It is an arithmetic number, because the mean of its divisors is an integer number (5679072).

Almost surely, 2^102166545 is an apocalyptic number.

102166545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102166545 is a deficient number, since it is larger than the sum of its proper divisors (79563759).

102166545 is a wasteful number, since it uses less digits than its factorization.

102166545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16953.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 102166545 is about 10107.7467815532. The cubic root of 102166545 is about 467.4870329174.

It can be divided in two parts, 10216 and 6545, that added together give a palindrome (16761).

The spelling of 102166545 in words is "one hundred two million, one hundred sixty-six thousand, five hundred forty-five".