55706289 has 8 divisors (see below), whose sum is σ = 74319072. Its totient is φ = 37115520.

The previous prime is 55706267. The next prime is 55706291. The reversal of 55706289 is 98260755.

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

It is not a de Polignac number, because 55706289 - 2¹² = 55702193 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 55706289.

It is not an unprimeable number, because it can be changed into a prime (55706789) 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, 1782 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (9289884).

Almost surely, 2^55706289 is an apocalyptic number.

It is an amenable number.

55706289 is a deficient number, since it is larger than the sum of its proper divisors (18612783).

55706289 is a wasteful number, since it uses less digits than its factorization.

55706289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 55706289 is about 7463.6645824957. The cubic root of 55706289 is about 381.9161959927.

The spelling of 55706289 in words is "fifty-five million, seven hundred six thousand, two hundred eighty-nine".