30405055 has 8 divisors (see below), whose sum is σ = 36603072. Its totient is φ = 24246048.

The previous prime is 30405049. The next prime is 30405059. The reversal of 30405055 is 55050403.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30405055 - 2³ = 30405047 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 (30405059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8007 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (4575384).

Almost surely, 2^30405055 is an apocalyptic number.

30405055 is a deficient number, since it is larger than the sum of its proper divisors (6198017).

30405055 is a wasteful number, since it uses less digits than its factorization.

30405055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19505.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 30405055 is about 5514.0778920868. The cubic root of 30405055 is about 312.1154480441.

Adding to 30405055 its reverse (55050403), we get a palindrome (85455458).

The spelling of 30405055 in words is "thirty million, four hundred five thousand, fifty-five".