561351506 has 16 divisors (see below), whose sum is σ = 851149728. Its totient is φ = 277648800.

The previous prime is 561351499. The next prime is 561351517. The reversal of 561351506 is 605153165.

It is a super-3 number, since 3×561351506³ (a number of 27 digits) contains 333 as substring.

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, 83486 + ... + 89958.

It is an arithmetic number, because the mean of its divisors is an integer number (53196858).

Almost surely, 2^561351506 is an apocalyptic number.

561351506 is a deficient number, since it is larger than the sum of its proper divisors (289798222).

561351506 is a wasteful number, since it uses less digits than its factorization.

561351506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 561351506 is about 23692.8577001593. The cubic root of 561351506 is about 824.9196155533.

The spelling of 561351506 in words is "five hundred sixty-one million, three hundred fifty-one thousand, five hundred six".