561066134 has 4 divisors (see below), whose sum is σ = 841599204. Its totient is φ = 280533066.

The previous prime is 561066127. The next prime is 561066151. The reversal of 561066134 is 431660165.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 561066134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140266532 + ... + 140266535.

It is an arithmetic number, because the mean of its divisors is an integer number (210399801).

Almost surely, 2^561066134 is an apocalyptic number.

561066134 is a deficient number, since it is larger than the sum of its proper divisors (280533070).

561066134 is a wasteful number, since it uses less digits than its factorization.

561066134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280533069.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 561066134 is about 23686.8346133459. The cubic root of 561066134 is about 824.7798048402.

The spelling of 561066134 in words is "five hundred sixty-one million, sixty-six thousand, one hundred thirty-four".