55830905 has 16 divisors (see below), whose sum is σ = 72349200. Its totient is φ = 41115648.

The previous prime is 55830893. The next prime is 55830953. The reversal of 55830905 is 50903855.

It can be written as a sum of positive squares in 8 ways, for example, as 121 + 55830784 = 11^2 + 7472^2 .

It is a cyclic number.

It is not a de Polignac number, because 55830905 - 2¹⁰ = 55829881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28229 + ... + 30141.

It is an arithmetic number, because the mean of its divisors is an integer number (4521825).

Almost surely, 2^55830905 is an apocalyptic number.

It is an amenable number.

55830905 is a deficient number, since it is larger than the sum of its proper divisors (16518295).

55830905 is a wasteful number, since it uses less digits than its factorization.

55830905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 55830905 is about 7472.0080968907. The cubic root of 55830905 is about 382.2007684342.

The spelling of 55830905 in words is "fifty-five million, eight hundred thirty thousand, nine hundred five".