561601493 has 8 divisors (see below), whose sum is σ = 568922112. Its totient is φ = 554326416.

The previous prime is 561601459. The next prime is 561601499. The reversal of 561601493 is 394106165.

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

It is a cyclic number.

It is not a de Polignac number, because 561601493 - 2¹⁸ = 561339349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561601499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13796 + ... + 36242.

It is an arithmetic number, because the mean of its divisors is an integer number (71115264).

Almost surely, 2^561601493 is an apocalyptic number.

It is an amenable number.

561601493 is a deficient number, since it is larger than the sum of its proper divisors (7320619).

561601493 is a wasteful number, since it uses less digits than its factorization.

561601493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22771.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 561601493 is about 23698.1326901509. The cubic root of 561601493 is about 825.0420513613.

The spelling of 561601493 in words is "five hundred sixty-one million, six hundred one thousand, four hundred ninety-three".