102550 has 24 divisors (see below), whose sum is σ = 218736. Its totient is φ = 35040.

The previous prime is 102547. The next prime is 102551. The reversal of 102550 is 55201.

It is a self number, because there is not a number n which added to its sum of digits gives 102550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204 + ... + 496.

It is an arithmetic number, because the mean of its divisors is an integer number (9114).

102550 is a Friedman number, since it can be written as 20510*5, using all its digits and the basic arithmetic operations.

2¹⁰²⁵⁵⁰ is an apocalyptic number.

102550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102550 is an abundant number, since it is smaller than the sum of its proper divisors (116186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102550 is a wasteful number, since it uses less digits than its factorization.

102550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 102550 is about 320.2342892321. The cubic root of 102550 is about 46.8071165548.

Adding to 102550 its reverse (55201), we get a palindrome (157751).

The spelling of 102550 in words is "one hundred two thousand, five hundred fifty".