55306075 has 36 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 39265600.

The previous prime is 55306073. The next prime is 55306079. The reversal of 55306075 is 57060355.

It is not a de Polignac number, because 55306075 - 2¹ = 55306073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55306073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141981 + ... + 142369.

It is an arithmetic number, because the mean of its divisors is an integer number (2143960).

Almost surely, 2^55306075 is an apocalyptic number.

55306075 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55306075 is a deficient number, since it is larger than the sum of its proper divisors (21876485).

55306075 is a wasteful number, since it uses less digits than its factorization.

55306075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 55306075 is about 7436.8054297528. The cubic root of 55306075 is about 380.9993891830. Note that the first 3 decimals are identical.

The spelling of 55306075 in words is "fifty-five million, three hundred six thousand, seventy-five".