561446503 has 4 divisors (see below), whose sum is σ = 563143048. Its totient is φ = 559749960.

The previous prime is 561446477. The next prime is 561446507. The reversal of 561446503 is 305644165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561446503 - 2¹⁷ = 561315431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561446507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847776 + ... + 848437.

It is an arithmetic number, because the mean of its divisors is an integer number (140785762).

Almost surely, 2^561446503 is an apocalyptic number.

561446503 is a deficient number, since it is larger than the sum of its proper divisors (1696545).

561446503 is a wasteful number, since it uses less digits than its factorization.

561446503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696544.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 561446503 is about 23694.8623756290. The cubic root of 561446503 is about 824.9661463917.

The spelling of 561446503 in words is "five hundred sixty-one million, four hundred forty-six thousand, five hundred three".