55489405 has 8 divisors (see below), whose sum is σ = 70092000. Its totient is φ = 42055056.

The previous prime is 55489403. The next prime is 55489433. The reversal of 55489405 is 50498455.

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

It is not a de Polignac number, because 55489405 - 2¹ = 55489403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55489403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291955 + ... + 292144.

It is an arithmetic number, because the mean of its divisors is an integer number (8761500).

Almost surely, 2^55489405 is an apocalyptic number.

It is an amenable number.

55489405 is a deficient number, since it is larger than the sum of its proper divisors (14602595).

55489405 is a wasteful number, since it uses less digits than its factorization.

55489405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584123.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 55489405 is about 7449.1210890950. The cubic root of 55489405 is about 381.4199070686.

The spelling of 55489405 in words is "fifty-five million, four hundred eighty-nine thousand, four hundred five".