55403089 has 8 divisors (see below), whose sum is σ = 63362880. Its totient is φ = 47454576.

The previous prime is 55403087. The next prime is 55403099. The reversal of 55403089 is 98030455.

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 55403089 - 2¹ = 55403087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55403087) 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, 17382 + ... + 20320.

It is an arithmetic number, because the mean of its divisors is an integer number (7920360).

Almost surely, 2^55403089 is an apocalyptic number.

It is an amenable number.

55403089 is a deficient number, since it is larger than the sum of its proper divisors (7959791).

55403089 is a wasteful number, since it uses less digits than its factorization.

55403089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 55403089 is about 7443.3251306120. The cubic root of 55403089 is about 381.2220331004. Note that the first 3 decimals are identical.

The spelling of 55403089 in words is "fifty-five million, four hundred three thousand, eighty-nine".