561155010 has 64 divisors (see below), whose sum is σ = 1454156928. Its totient is φ = 137769984.

The previous prime is 561154981. The next prime is 561155011. The reversal of 561155010 is 10551165.

It is not an unprimeable number, because it can be changed into a prime (561155011) 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 31 ways as a sum of consecutive naturals, for example, 167209 + ... + 170531.

It is an arithmetic number, because the mean of its divisors is an integer number (22721202).

Almost surely, 2^561155010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561155010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (727078464).

561155010 is an abundant number, since it is smaller than the sum of its proper divisors (893001918).

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

561155010 is a wasteful number, since it uses less digits than its factorization.

561155010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 561155010 is about 23688.7106023101. The cubic root of 561155010 is about 824.8233524455.

The spelling of 561155010 in words is "five hundred sixty-one million, one hundred fifty-five thousand, ten".