55305305 has 8 divisors (see below), whose sum is σ = 72399744. Its totient is φ = 40222000.

The previous prime is 55305287. The next prime is 55305319. The reversal of 55305305 is 50350355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55305305 - 2⁶ = 55305241 is a prime.

It is a super-2 number, since 2×55305305² = 6117353522286050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502721 + ... + 502830.

It is an arithmetic number, because the mean of its divisors is an integer number (9049968).

Almost surely, 2^55305305 is an apocalyptic number.

55305305 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55305305 is a deficient number, since it is larger than the sum of its proper divisors (17094439).

55305305 is a wasteful number, since it uses less digits than its factorization.

55305305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005567.

The product of its (nonzero) digits is 5625, while the sum is 26.

The square root of 55305305 is about 7436.7536600320. The cubic root of 55305305 is about 380.9976210174.

The spelling of 55305305 in words is "fifty-five million, three hundred five thousand, three hundred five".