55106561 has 8 divisors (see below), whose sum is σ = 57087744. Its totient is φ = 53138160.

The previous prime is 55106507. The next prime is 55106581. The reversal of 55106561 is 16560155.

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 55106561 - 2¹⁰ = 55105537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55106581) 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, 6050 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (7135968).

Almost surely, 2^55106561 is an apocalyptic number.

It is an amenable number.

55106561 is a deficient number, since it is larger than the sum of its proper divisors (1981183).

55106561 is a wasteful number, since it uses less digits than its factorization.

55106561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 55106561 is about 7423.3793517508. The cubic root of 55106561 is about 380.5406915189.

The spelling of 55106561 in words is "fifty-five million, one hundred six thousand, five hundred sixty-one".