55591045 has 8 divisors (see below), whose sum is σ = 68260896. Its totient is φ = 43438416.

The previous prime is 55591027. The next prime is 55591049. The reversal of 55591045 is 54019555.

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 55591045 - 2¹⁷ = 55459973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55591045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55591049) 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, 129067 + ... + 129496.

It is an arithmetic number, because the mean of its divisors is an integer number (8532612).

Almost surely, 2^55591045 is an apocalyptic number.

It is an amenable number.

55591045 is a deficient number, since it is larger than the sum of its proper divisors (12669851).

55591045 is a wasteful number, since it uses less digits than its factorization.

55591045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258611.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 55591045 is about 7455.9402492241. The cubic root of 55591045 is about 381.6526474344.

The spelling of 55591045 in words is "fifty-five million, five hundred ninety-one thousand, forty-five".