55009745 has 8 divisors (see below), whose sum is σ = 75441984. Its totient is φ = 37720944.

The previous prime is 55009733. The next prime is 55009763. The reversal of 55009745 is 54790055.

55009745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55009745 - 2⁶ = 55009681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1571707 = 55009745 / (5 + 5 + 0 + 0 + 9 + 7 + 4 + 5).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785819 + ... + 785888.

It is an arithmetic number, because the mean of its divisors is an integer number (9430248).

Almost surely, 2^55009745 is an apocalyptic number.

It is an amenable number.

55009745 is a deficient number, since it is larger than the sum of its proper divisors (20432239).

55009745 is a wasteful number, since it uses less digits than its factorization.

55009745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571719.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 55009745 is about 7416.8554657618. The cubic root of 55009745 is about 380.3177052175.

The spelling of 55009745 in words is "fifty-five million, nine thousand, seven hundred forty-five".