561034009 has 16 divisors (see below), whose sum is σ = 600969600. Its totient is φ = 522567936.

The previous prime is 561034003. The next prime is 561034027. The reversal of 561034009 is 900430165.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561034009 is a prime.

It is a super-2 number, since 2×561034009² = 629518318509224162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561034003) 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 15 ways as a sum of consecutive naturals, for example, 146017 + ... + 149809.

It is an arithmetic number, because the mean of its divisors is an integer number (37560600).

Almost surely, 2^561034009 is an apocalyptic number.

561034009 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

561034009 is a deficient number, since it is larger than the sum of its proper divisors (39935591).

561034009 is a wasteful number, since it uses less digits than its factorization.

561034009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 561034009 is about 23686.1564843265. The cubic root of 561034009 is about 824.7640630495.

The spelling of 561034009 in words is "five hundred sixty-one million, thirty-four thousand, nine".