30551133 has 4 divisors (see below), whose sum is σ = 40734848. Its totient is φ = 20367420.

The previous prime is 30551051. The next prime is 30551141. The reversal of 30551133 is 33115503.

It is a happy number.

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.

It is not a de Polignac number, because 30551133 - 2⁹ = 30550621 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 (30551173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5091853 + ... + 5091858.

It is an arithmetic number, because the mean of its divisors is an integer number (10183712).

Almost surely, 2^30551133 is an apocalyptic number.

It is an amenable number.

30551133 is a deficient number, since it is larger than the sum of its proper divisors (10183715).

30551133 is a wasteful number, since it uses less digits than its factorization.

30551133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10183714.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 30551133 is about 5527.3079342479. The cubic root of 30551133 is about 312.6144920213.

Adding to 30551133 its reverse (33115503), we get a palindrome (63666636).

The spelling of 30551133 in words is "thirty million, five hundred fifty-one thousand, one hundred thirty-three".