561550634 has 8 divisors (see below), whose sum is σ = 843309120. Its totient is φ = 280447596.

The previous prime is 561550603. The next prime is 561550657. The reversal of 561550634 is 436055165.

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

It is a super-2 number, since 2×561550634² = 630678229091603912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561550594 and 561550603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161714 + ... + 165149.

It is an arithmetic number, because the mean of its divisors is an integer number (105413640).

Almost surely, 2^561550634 is an apocalyptic number.

561550634 is a deficient number, since it is larger than the sum of its proper divisors (281758486).

561550634 is a wasteful number, since it uses less digits than its factorization.

561550634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327724.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 561550634 is about 23697.0596066263. The cubic root of 561550634 is about 825.0171451595.

The spelling of 561550634 in words is "five hundred sixty-one million, five hundred fifty thousand, six hundred thirty-four".