561217488 has 40 divisors (see below), whose sum is σ = 1561337568. Its totient is φ = 172682112.

The previous prime is 561217487. The next prime is 561217511. The reversal of 561217488 is 884712165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561217487) 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, 449070 + ... + 450317.

Almost surely, 2^561217488 is an apocalyptic number.

It is an amenable number.

561217488 is an abundant number, since it is smaller than the sum of its proper divisors (1000120080).

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

561217488 is a wasteful number, since it uses less digits than its factorization.

561217488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899411 (or 899405 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 561217488 is about 23690.0292950431. The cubic root of 561217488 is about 824.8539627642.

The spelling of 561217488 in words is "five hundred sixty-one million, two hundred seventeen thousand, four hundred eighty-eight".