55647745 has 8 divisors (see below), whose sum is σ = 66835584. Its totient is φ = 44479344.

The previous prime is 55647737. The next prime is 55647769. The reversal of 55647745 is 54774655.

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 55647745 - 2³ = 55647737 is a prime.

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, 2442 + ... + 10828.

It is an arithmetic number, because the mean of its divisors is an integer number (8354448).

Almost surely, 2^55647745 is an apocalyptic number.

It is an amenable number.

55647745 is a deficient number, since it is larger than the sum of its proper divisors (11187839).

55647745 is a wasteful number, since it uses less digits than its factorization.

55647745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its digits is 588000, while the sum is 43.

The square root of 55647745 is about 7459.7416175093. The cubic root of 55647745 is about 381.7823586864.

The spelling of 55647745 in words is "fifty-five million, six hundred forty-seven thousand, seven hundred forty-five".