561907473 has 4 divisors (see below), whose sum is σ = 749209968. Its totient is φ = 374604980.

The previous prime is 561907469. The next prime is 561907481. The reversal of 561907473 is 374709165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561907473 - 2² = 561907469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561907373) by changing a digit.

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, 93651243 + ... + 93651248.

It is an arithmetic number, because the mean of its divisors is an integer number (187302492).

Almost surely, 2^561907473 is an apocalyptic number.

It is an amenable number.

561907473 is a deficient number, since it is larger than the sum of its proper divisors (187302495).

561907473 is a wasteful number, since it uses less digits than its factorization.

561907473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187302494.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 561907473 is about 23704.5875939659. The cubic root of 561907473 is about 825.1918613462.

The spelling of 561907473 in words is "five hundred sixty-one million, nine hundred seven thousand, four hundred seventy-three".