561310488 has 96 divisors (see below), whose sum is σ = 1620833760. Its totient is φ = 174873600.

The previous prime is 561310487. The next prime is 561310489. The reversal of 561310488 is 884013165.

561310488 is a `hidden beast` number, since 561 + 3 + 10 + 4 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (561310487) and next prime (561310489).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561310481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183306 + ... + 186342.

It is an arithmetic number, because the mean of its divisors is an integer number (16883685).

Almost surely, 2^561310488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561310488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810416880).

561310488 is an abundant number, since it is smaller than the sum of its proper divisors (1059523272).

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

561310488 is a wasteful number, since it uses less digits than its factorization.

561310488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 561310488 is about 23691.9920648307. The cubic root of 561310488 is about 824.8995227495.

The spelling of 561310488 in words is "five hundred sixty-one million, three hundred ten thousand, four hundred eighty-eight".