30550133 has 4 divisors (see below), whose sum is σ = 30658368. Its totient is φ = 30441900.

The previous prime is 30550103. The next prime is 30550147. The reversal of 30550133 is 33105503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33105503 = 79 ⋅419057.

It is a cyclic number.

It is not a de Polignac number, because 30550133 - 2¹⁴ = 30533749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30550103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53693 + ... + 54258.

It is an arithmetic number, because the mean of its divisors is an integer number (7664592).

Almost surely, 2^30550133 is an apocalyptic number.

It is an amenable number.

30550133 is a deficient number, since it is larger than the sum of its proper divisors (108235).

30550133 is a wasteful number, since it uses less digits than its factorization.

30550133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108234.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 30550133 is about 5527.2174735576. The cubic root of 30550133 is about 312.6110811505.

Adding to 30550133 its reverse (33105503), we get a palindrome (63655636).

The spelling of 30550133 in words is "thirty million, five hundred fifty thousand, one hundred thirty-three".