102543550 has 24 divisors (see below), whose sum is σ = 192706416. Its totient is φ = 40592640.

The previous prime is 102543547. The next prime is 102543563. The reversal of 102543550 is 55345201.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5722 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (8029434).

Almost surely, 2^102543550 is an apocalyptic number.

102543550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102543550 is a deficient number, since it is larger than the sum of its proper divisors (90162866).

102543550 is a wasteful number, since it uses less digits than its factorization.

102543550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21252 (or 21247 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 102543550 is about 10126.3789184486. The cubic root of 102543550 is about 468.0613520512.

Adding to 102543550 its reverse (55345201), we get a palindrome (157888751).

The spelling of 102543550 in words is "one hundred two million, five hundred forty-three thousand, five hundred fifty".