55550689 has 8 divisors (see below), whose sum is σ = 57922560. Its totient is φ = 53209296.

The previous prime is 55550641. The next prime is 55550701. The reversal of 55550689 is 98605555.

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 55550689 - 2¹⁵ = 55517921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55553689) 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, 3859 + ... + 11224.

It is an arithmetic number, because the mean of its divisors is an integer number (7240320).

Almost surely, 2^55550689 is an apocalyptic number.

It is an amenable number.

55550689 is a deficient number, since it is larger than the sum of its proper divisors (2371871).

55550689 is a wasteful number, since it uses less digits than its factorization.

55550689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15239.

The product of its (nonzero) digits is 270000, while the sum is 43.

The square root of 55550689 is about 7453.2334593786. The cubic root of 55550689 is about 381.5602722282.

The spelling of 55550689 in words is "fifty-five million, five hundred fifty thousand, six hundred eighty-nine".