610055561 has 8 divisors (see below), whose sum is σ = 618063264. Its totient is φ = 602063680.

The previous prime is 610055543. The next prime is 610055581. The reversal of 610055561 is 165550016.

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 610055561 - 2²² = 605861257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610055531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87185 + ... + 93921.

It is an arithmetic number, because the mean of its divisors is an integer number (77257908).

Almost surely, 2^610055561 is an apocalyptic number.

It is an amenable number.

610055561 is a deficient number, since it is larger than the sum of its proper divisors (8007703).

610055561 is a wasteful number, since it uses less digits than its factorization.

610055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 610055561 is about 24699.3028444124. The cubic root of 610055561 is about 848.1183571782.

It can be divided in two parts, 61005 and 5561, that added together give a palindrome (66566).

The spelling of 610055561 in words is "six hundred ten million, fifty-five thousand, five hundred sixty-one".