55609345 has 8 divisors (see below), whose sum is σ = 72797760. Its totient is φ = 40443120.

The previous prime is 55609343. The next prime is 55609373. The reversal of 55609345 is 54390655.

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

It is not a de Polignac number, because 55609345 - 2¹ = 55609343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55609343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505485 + ... + 505594.

It is an arithmetic number, because the mean of its divisors is an integer number (9099720).

Almost surely, 2^55609345 is an apocalyptic number.

55609345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55609345 is a deficient number, since it is larger than the sum of its proper divisors (17188415).

55609345 is a wasteful number, since it uses less digits than its factorization.

55609345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011095.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 55609345 is about 7457.1673576500. The cubic root of 55609345 is about 381.6945215480.

The spelling of 55609345 in words is "fifty-five million, six hundred nine thousand, three hundred forty-five".