561814249 has 16 divisors (see below), whose sum is σ = 627281280. Its totient is φ = 500048640.

The previous prime is 561814247. The next prime is 561814273. The reversal of 561814249 is 942418165.

It is a cyclic number.

It is not a de Polignac number, because 561814249 - 2¹ = 561814247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561814241) 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, 238819 + ... + 241159.

It is an arithmetic number, because the mean of its divisors is an integer number (39205080).

Almost surely, 2^561814249 is an apocalyptic number.

It is an amenable number.

561814249 is a deficient number, since it is larger than the sum of its proper divisors (65467031).

561814249 is a wasteful number, since it uses less digits than its factorization.

561814249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its digits is 69120, while the sum is 40.

The square root of 561814249 is about 23702.6211419750. The cubic root of 561814249 is about 825.1462239744.

The spelling of 561814249 in words is "five hundred sixty-one million, eight hundred fourteen thousand, two hundred forty-nine".