102557543 has 16 divisors (see below), whose sum is σ = 116739360. Its totient is φ = 89985280.

The previous prime is 102557527. The next prime is 102557561. The reversal of 102557543 is 345755201.

It is not a de Polignac number, because 102557543 - 2⁴ = 102557527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102557593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37271 + ... + 39927.

It is an arithmetic number, because the mean of its divisors is an integer number (7296210).

Almost surely, 2^102557543 is an apocalyptic number.

102557543 is a deficient number, since it is larger than the sum of its proper divisors (14181817).

102557543 is an equidigital number, since it uses as much as digits as its factorization.

102557543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 102557543 is about 10127.0698131296. The cubic root of 102557543 is about 468.0826414923.

The spelling of 102557543 in words is "one hundred two million, five hundred fifty-seven thousand, five hundred forty-three".