55944561 has 8 divisors (see below), whose sum is σ = 75537280. Its totient is φ = 36824112.

The previous prime is 55944527. The next prime is 55944587. The reversal of 55944561 is 16544955.

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

It is not a de Polignac number, because 55944561 - 2¹⁷ = 55813489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55944961) 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, 117790 + ... + 118263.

It is an arithmetic number, because the mean of its divisors is an integer number (9442160).

Almost surely, 2^55944561 is an apocalyptic number.

It is an amenable number.

55944561 is a deficient number, since it is larger than the sum of its proper divisors (19592719).

55944561 is a wasteful number, since it uses less digits than its factorization.

55944561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236135.

The product of its digits is 108000, while the sum is 39.

The square root of 55944561 is about 7479.6096823297. The cubic root of 55944561 is about 382.4599436886.

The spelling of 55944561 in words is "fifty-five million, nine hundred forty-four thousand, five hundred sixty-one".