561177834 has 16 divisors (see below), whose sum is σ = 1282692288. Its totient is φ = 160336512.

The previous prime is 561177829. The next prime is 561177923. The reversal of 561177834 is 438771165.

561177834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561177834² = 629841122745863112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 13361377 = 561177834 / (5 + 6 + 1 + 1 + 7 + 7 + 8 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680647 + ... + 6680730.

It is an arithmetic number, because the mean of its divisors is an integer number (80168268).

Almost surely, 2^561177834 is an apocalyptic number.

561177834 is an abundant number, since it is smaller than the sum of its proper divisors (721514454).

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

561177834 is a wasteful number, since it uses less digits than its factorization.

561177834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361389.

The product of its digits is 141120, while the sum is 42.

The square root of 561177834 is about 23689.1923458779. The cubic root of 561177834 is about 824.8345350437.

The spelling of 561177834 in words is "five hundred sixty-one million, one hundred seventy-seven thousand, eight hundred thirty-four".