561838402 has 8 divisors (see below), whose sum is σ = 871818300. Its totient is φ = 271232304.

The previous prime is 561838391. The next prime is 561838439. The reversal of 561838402 is 204838165.

It is a happy number.

561838402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 559275201 + 2563201 = 23649^2 + 1601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4843377 + ... + 4843492.

Almost surely, 2^561838402 is an apocalyptic number.

561838402 is a deficient number, since it is larger than the sum of its proper divisors (309979898).

561838402 is a wasteful number, since it uses less digits than its factorization.

561838402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9686900.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 561838402 is about 23703.1306371121. The cubic root of 561838402 is about 825.1580484468.

The spelling of 561838402 in words is "five hundred sixty-one million, eight hundred thirty-eight thousand, four hundred two".