219955452 has 48 divisors (see below), whose sum is σ = 544696992. Its totient is φ = 68843520.

The previous prime is 219955403. The next prime is 219955453. The reversal of 219955452 is 254559912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219955453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109368 + ... + 111360.

It is an arithmetic number, because the mean of its divisors is an integer number (11347854).

Almost surely, 2^219955452 is an apocalyptic number.

It is an amenable number.

219955452 is an abundant number, since it is smaller than the sum of its proper divisors (324741540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219955452 is a wasteful number, since it uses less digits than its factorization.

219955452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2556 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 219955452 is about 14830.8951853892. The cubic root of 219955452 is about 603.6403242860.

The spelling of 219955452 in words is "two hundred nineteen million, nine hundred fifty-five thousand, four hundred fifty-two".