55210489 has 4 divisors (see below), whose sum is σ = 56146320. Its totient is φ = 54274660.

The previous prime is 55210487. The next prime is 55210513. The reversal of 55210489 is 98401255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98401255 = 5 ⋅19680251.

It is a cyclic number.

It is not a de Polignac number, because 55210489 - 2¹ = 55210487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55210481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467827 + ... + 467944.

It is an arithmetic number, because the mean of its divisors is an integer number (14036580).

Almost surely, 2^55210489 is an apocalyptic number.

55210489 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

55210489 is a deficient number, since it is larger than the sum of its proper divisors (935831).

55210489 is an equidigital number, since it uses as much as digits as its factorization.

55210489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935830.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 55210489 is about 7430.3761008444. The cubic root of 55210489 is about 380.7797676892.

The spelling of 55210489 in words is "fifty-five million, two hundred ten thousand, four hundred eighty-nine".