610441561 has 4 divisors (see below), whose sum is σ = 631491300. Its totient is φ = 589391824.

The previous prime is 610441547. The next prime is 610441571. The reversal of 610441561 is 165144016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 375003225 + 235438336 = 19365^2 + 15344^2 .

It is not a de Polignac number, because 610441561 - 2¹¹ = 610439513 is a prime.

It is a super-5 number, since 5×610441561⁵ (a number of 45 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610441541) 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 3 ways as a sum of consecutive naturals, for example, 10524826 + ... + 10524883.

It is an arithmetic number, because the mean of its divisors is an integer number (157872825).

Almost surely, 2^610441561 is an apocalyptic number.

It is an amenable number.

610441561 is a deficient number, since it is larger than the sum of its proper divisors (21049739).

610441561 is a wasteful number, since it uses less digits than its factorization.

610441561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21049738.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 610441561 is about 24707.1155945003. The cubic root of 610441561 is about 848.2971958965.

Adding to 610441561 its reverse (165144016), we get a palindrome (775585577).

The spelling of 610441561 in words is "six hundred ten million, four hundred forty-one thousand, five hundred sixty-one".