561133085 has 4 divisors (see below), whose sum is σ = 673359708. Its totient is φ = 448906464.

The previous prime is 561133057. The next prime is 561133103. The reversal of 561133085 is 580331165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580331165 = 5 ⋅116066233.

It can be written as a sum of positive squares in 2 ways, for example, as 358042084 + 203091001 = 18922^2 + 14251^2 .

It is a cyclic number.

It is not a de Polignac number, because 561133085 - 2⁶ = 561133021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56113304 + ... + 56113313.

It is an arithmetic number, because the mean of its divisors is an integer number (168339927).

Almost surely, 2^561133085 is an apocalyptic number.

It is an amenable number.

561133085 is a deficient number, since it is larger than the sum of its proper divisors (112226623).

561133085 is a wasteful number, since it uses less digits than its factorization.

561133085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112226622.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 561133085 is about 23688.2478246070. The cubic root of 561133085 is about 824.8126100261.

The spelling of 561133085 in words is "five hundred sixty-one million, one hundred thirty-three thousand, eighty-five".