561245255 has 8 divisors (see below), whose sum is σ = 675531024. Its totient is φ = 447638400.

The previous prime is 561245239. The next prime is 561245261. The reversal of 561245255 is 552542165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561245255 - 2⁴ = 561245239 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 167906 + ... + 171215.

It is an arithmetic number, because the mean of its divisors is an integer number (84441378).

Almost surely, 2^561245255 is an apocalyptic number.

561245255 is a deficient number, since it is larger than the sum of its proper divisors (114285769).

561245255 is a wasteful number, since it uses less digits than its factorization.

561245255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339457.

The product of its digits is 60000, while the sum is 35.

The square root of 561245255 is about 23690.6153360355. The cubic root of 561245255 is about 824.8675661311.

The spelling of 561245255 in words is "five hundred sixty-one million, two hundred forty-five thousand, two hundred fifty-five".