55089493 has 8 divisors (see below), whose sum is σ = 59338400. Its totient is φ = 50975568.

The previous prime is 55089491. The next prime is 55089497. The reversal of 55089493 is 39498055.

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 not a de Polignac number, because 55089493 - 2¹ = 55089491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55089491) 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, 32898 + ... + 34531.

It is an arithmetic number, because the mean of its divisors is an integer number (7417300).

Almost surely, 2^55089493 is an apocalyptic number.

It is an amenable number.

55089493 is a deficient number, since it is larger than the sum of its proper divisors (4248907).

55089493 is a wasteful number, since it uses less digits than its factorization.

55089493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67491.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 55089493 is about 7422.2296515266. The cubic root of 55089493 is about 380.5013995297.

The spelling of 55089493 in words is "fifty-five million, eighty-nine thousand, four hundred ninety-three".