55022009 has 8 divisors (see below), whose sum is σ = 63231168. Its totient is φ = 46900080.

The previous prime is 55021973. The next prime is 55022027. The reversal of 55022009 is 90022055.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55022009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55022039) 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, 20447 + ... + 22980.

It is an arithmetic number, because the mean of its divisors is an integer number (7903896).

Almost surely, 2^55022009 is an apocalyptic number.

It is an amenable number.

55022009 is a deficient number, since it is larger than the sum of its proper divisors (8209159).

55022009 is a wasteful number, since it uses less digits than its factorization.

55022009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43615.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 55022009 is about 7417.6821851573. The cubic root of 55022009 is about 380.3459660875.

The spelling of 55022009 in words is "fifty-five million, twenty-two thousand, nine".