30555121 has 8 divisors (see below), whose sum is σ = 30909600. Its totient is φ = 30203040.

The previous prime is 30555101. The next prime is 30555131. The reversal of 30555121 is 12155503.

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 30555121 - 2⁵ = 30555089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30555092 and 30555101.

It is not an unprimeable number, because it can be changed into a prime (30555101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37365 + ... + 38173.

It is an arithmetic number, because the mean of its divisors is an integer number (3863700).

Almost surely, 2^30555121 is an apocalyptic number.

It is an amenable number.

30555121 is a deficient number, since it is larger than the sum of its proper divisors (354479).

30555121 is a wasteful number, since it uses less digits than its factorization.

30555121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 30555121 is about 5527.6686767570. The cubic root of 30555121 is about 312.6280938338.

The spelling of 30555121 in words is "thirty million, five hundred fifty-five thousand, one hundred twenty-one".