561667227 has 16 divisors (see below), whose sum is σ = 859969920. Its totient is φ = 322488000.

The previous prime is 561667219. The next prime is 561667243. The reversal of 561667227 is 722766165.

It is not a de Polignac number, because 561667227 - 2³ = 561667219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561667217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447274 + ... + 448527.

It is an arithmetic number, because the mean of its divisors is an integer number (53748120).

Almost surely, 2^561667227 is an apocalyptic number.

561667227 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

561667227 is a deficient number, since it is larger than the sum of its proper divisors (298302693).

561667227 is a wasteful number, since it uses less digits than its factorization.

561667227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895834.

The product of its digits is 211680, while the sum is 42.

The square root of 561667227 is about 23699.5195520922. The cubic root of 561667227 is about 825.0742397838.

The spelling of 561667227 in words is "five hundred sixty-one million, six hundred sixty-seven thousand, two hundred twenty-seven".