30555105 has 32 divisors (see below), whose sum is σ = 56089344. Its totient is φ = 13913856.

The previous prime is 30555101. The next prime is 30555131. The reversal of 30555105 is 50155503.

It is not a de Polignac number, because 30555105 - 2² = 30555101 is a prime.

It is a super-2 number, since 2×30555105² = 1867228883122050, which contains 22 as substring.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 41319 + ... + 42051.

It is an arithmetic number, because the mean of its divisors is an integer number (1752792).

Almost surely, 2^30555105 is an apocalyptic number.

30555105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30555105 is a deficient number, since it is larger than the sum of its proper divisors (25534239).

30555105 is a wasteful number, since it uses less digits than its factorization.

30555105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 30555105 is about 5527.6672294920. The cubic root of 30555105 is about 312.6280392652.

The spelling of 30555105 in words is "thirty million, five hundred fifty-five thousand, one hundred five".