55303305 has 16 divisors (see below), whose sum is σ = 88599744. Its totient is φ = 29456960.

The previous prime is 55303273. The next prime is 55303309. The reversal of 55303305 is 50330355.

It is not a de Polignac number, because 55303305 - 2⁵ = 55303273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55303309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12667 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (5537484).

Almost surely, 2^55303305 is an apocalyptic number.

It is an amenable number.

55303305 is a deficient number, since it is larger than the sum of its proper divisors (33296439).

55303305 is a wasteful number, since it uses less digits than its factorization.

55303305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4776.

The product of its (nonzero) digits is 3375, while the sum is 24.

The square root of 55303305 is about 7436.6191915413. The cubic root of 55303305 is about 380.9930283029.

The spelling of 55303305 in words is "fifty-five million, three hundred three thousand, three hundred five".