243481555 has 8 divisors (see below), whose sum is σ = 295876800. Its totient is φ = 192319296.

The previous prime is 243481547. The next prime is 243481583. The reversal of 243481555 is 555184342.

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 243481555 - 2³ = 243481547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307810 + ... + 308599.

It is an arithmetic number, because the mean of its divisors is an integer number (36984600).

Almost surely, 2^243481555 is an apocalyptic number.

243481555 is a deficient number, since it is larger than the sum of its proper divisors (52395245).

243481555 is an equidigital number, since it uses as much as digits as its factorization.

243481555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616493.

The product of its digits is 96000, while the sum is 37.

The square root of 243481555 is about 15603.8955072123. The cubic root of 243481555 is about 624.4370867581.

It can be divided in two parts, 243481 and 555, that added together give a square (244036 = 494²).

The spelling of 243481555 in words is "two hundred forty-three million, four hundred eighty-one thousand, five hundred fifty-five".