561346135 has 32 divisors (see below), whose sum is σ = 781000704. Its totient is φ = 379392000.

The previous prime is 561346133. The next prime is 561346139. The reversal of 561346135 is 531643165.

It is not a de Polignac number, because 561346135 - 2¹ = 561346133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561346135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561346133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 875415 + ... + 876055.

It is an arithmetic number, because the mean of its divisors is an integer number (24406272).

Almost surely, 2^561346135 is an apocalyptic number.

561346135 is a deficient number, since it is larger than the sum of its proper divisors (219654569).

561346135 is a wasteful number, since it uses less digits than its factorization.

561346135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its digits is 32400, while the sum is 34.

The square root of 561346135 is about 23692.7443534935. The cubic root of 561346135 is about 824.9169846068.

The spelling of 561346135 in words is "five hundred sixty-one million, three hundred forty-six thousand, one hundred thirty-five".