561034361 has 4 divisors (see below), whose sum is σ = 561108324. Its totient is φ = 560960400.

The previous prime is 561034343. The next prime is 561034381. The reversal of 561034361 is 163430165.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163430165 = 5 ⋅32686033.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 558613225 = 1556^2 + 23635^2 .

It is a cyclic number.

It is not a de Polignac number, because 561034361 - 2²² = 556840057 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561034301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24110 + ... + 41271.

It is an arithmetic number, because the mean of its divisors is an integer number (140277081).

Almost surely, 2^561034361 is an apocalyptic number.

It is an amenable number.

561034361 is a deficient number, since it is larger than the sum of its proper divisors (73963).

561034361 is an equidigital number, since it uses as much as digits as its factorization.

561034361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73962.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 561034361 is about 23686.1639148259. The cubic root of 561034361 is about 824.7642355387.

The spelling of 561034361 in words is "five hundred sixty-one million, thirty-four thousand, three hundred sixty-one".