30550 has 24 divisors (see below), whose sum is σ = 62496. Its totient is φ = 11040.

The previous prime is 30539. The next prime is 30553. The reversal of 30550 is 5503.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 30550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (2604).

2³⁰⁵⁵⁰ is an apocalyptic number.

30550 is an abundant number, since it is smaller than the sum of its proper divisors (31946).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31248).

30550 is a wasteful number, since it uses less digits than its factorization.

30550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 30550 is about 174.7855829295. The cubic root of 30550 is about 31.2610627499.

Adding to 30550 its product of nonzero digits (75), we get a square (30625 = 175²).

The spelling of 30550 in words is "thirty thousand, five hundred fifty".