55669745 has 8 divisors (see below), whose sum is σ = 67936320. Its totient is φ = 43780720.

The previous prime is 55669741. The next prime is 55669787. The reversal of 55669745 is 54796655.

It is a happy number.

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

It is not a de Polignac number, because 55669745 - 2² = 55669741 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55669745.

It is not an unprimeable number, because it can be changed into a prime (55669741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94061 + ... + 94650.

It is an arithmetic number, because the mean of its divisors is an integer number (8492040).

Almost surely, 2^55669745 is an apocalyptic number.

It is an amenable number.

55669745 is a deficient number, since it is larger than the sum of its proper divisors (12266575).

55669745 is a wasteful number, since it uses less digits than its factorization.

55669745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188775.

The product of its digits is 1134000, while the sum is 47.

The square root of 55669745 is about 7461.2160537006. The cubic root of 55669745 is about 381.8326638412.

The spelling of 55669745 in words is "fifty-five million, six hundred sixty-nine thousand, seven hundred forty-five".