561000104 has 32 divisors (see below), whose sum is σ = 1208208000. Its totient is φ = 239215680.

The previous prime is 561000101. The next prime is 561000127. The reversal of 561000104 is 401000165.

It is a happy number.

It is a super-2 number, since 2×561000104² = 629442233376021632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561000101) 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, 14027 + ... + 36314.

It is an arithmetic number, because the mean of its divisors is an integer number (37756500).

Almost surely, 2^561000104 is an apocalyptic number.

It is an amenable number.

561000104 is an abundant number, since it is smaller than the sum of its proper divisors (647207896).

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

561000104 is a wasteful number, since it uses less digits than its factorization.

561000104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50553 (or 50549 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 561000104 is about 23685.4407600956. The cubic root of 561000104 is about 824.7474483770.

Adding to 561000104 its reverse (401000165), we get a palindrome (962000269).

The spelling of 561000104 in words is "five hundred sixty-one million, one hundred four", and thus it is an aban number.