55030305 has 16 divisors (see below), whose sum is σ = 96053184. Its totient is φ = 26681280.

The previous prime is 55030291. The next prime is 55030307. The reversal of 55030305 is 50303055.

It is not a de Polignac number, because 55030305 - 2⁸ = 55030049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55030307) 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, 166594 + ... + 166923.

It is an arithmetic number, because the mean of its divisors is an integer number (6003324).

Almost surely, 2^55030305 is an apocalyptic number.

55030305 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55030305 is a deficient number, since it is larger than the sum of its proper divisors (41022879).

55030305 is a wasteful number, since it uses less digits than its factorization.

55030305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333536.

The product of its (nonzero) digits is 1125, while the sum is 21.

The square root of 55030305 is about 7418.2413684107. The cubic root of 55030305 is about 380.3650808116.

The spelling of 55030305 in words is "fifty-five million, thirty thousand, three hundred five".