561225206 has 4 divisors (see below), whose sum is σ = 841837812. Its totient is φ = 280612602.

The previous prime is 561225187. The next prime is 561225229. The reversal of 561225206 is 602522165.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140306300 + ... + 140306303.

It is an arithmetic number, because the mean of its divisors is an integer number (210459453).

Almost surely, 2^561225206 is an apocalyptic number.

561225206 is a deficient number, since it is larger than the sum of its proper divisors (280612606).

561225206 is a wasteful number, since it uses less digits than its factorization.

561225206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280612605.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 561225206 is about 23690.1921900182. The cubic root of 561225206 is about 824.8577439446.

The spelling of 561225206 in words is "five hundred sixty-one million, two hundred twenty-five thousand, two hundred six".