102555543 has 8 divisors (see below), whose sum is σ = 144784368. Its totient is φ = 64348544.

The previous prime is 102555463. The next prime is 102555619. The reversal of 102555543 is 345555201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102555543 - 2¹⁶ = 102490007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102555543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102551543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005396 + ... + 1005497.

It is an arithmetic number, because the mean of its divisors is an integer number (18098046).

Almost surely, 2^102555543 is an apocalyptic number.

102555543 is a deficient number, since it is larger than the sum of its proper divisors (42228825).

102555543 is a wasteful number, since it uses less digits than its factorization.

102555543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010913.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 102555543 is about 10126.9710674021. The cubic root of 102555543 is about 468.0795987408.

The spelling of 102555543 in words is "one hundred two million, five hundred fifty-five thousand, five hundred forty-three".