561086234 has 4 divisors (see below), whose sum is σ = 841629354. Its totient is φ = 280543116.

The previous prime is 561086221. The next prime is 561086237. The reversal of 561086234 is 432680165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432680165 = 5 ⋅86536033.

It can be written as a sum of positive squares in only one way, i.e., 415956025 + 145130209 = 20395^2 + 12047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561086194 and 561086203.

It is not an unprimeable number, because it can be changed into a prime (561086237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140271557 + ... + 140271560.

Almost surely, 2^561086234 is an apocalyptic number.

561086234 is a deficient number, since it is larger than the sum of its proper divisors (280543120).

561086234 is a wasteful number, since it uses less digits than its factorization.

561086234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280543119.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 561086234 is about 23687.2588958706. The cubic root of 561086234 is about 824.7896538729.

The spelling of 561086234 in words is "five hundred sixty-one million, eighty-six thousand, two hundred thirty-four".