561361098 has 8 divisors (see below), whose sum is σ = 1122722208. Its totient is φ = 187120364.

The previous prime is 561361093. The next prime is 561361111. The reversal of 561361098 is 890163165.

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

561361098 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561361093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46780086 + ... + 46780097.

It is an arithmetic number, because the mean of its divisors is an integer number (140340276).

Almost surely, 2^561361098 is an apocalyptic number.

561361098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

561361098 is a wasteful number, since it uses less digits than its factorization.

561361098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93560188.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 561361098 is about 23693.0601231669. The cubic root of 561361098 is about 824.9243140852.

The spelling of 561361098 in words is "five hundred sixty-one million, three hundred sixty-one thousand, ninety-eight".