561463311 has 4 divisors (see below), whose sum is σ = 748617752. Its totient is φ = 374308872.

The previous prime is 561463297. The next prime is 561463313. The reversal of 561463311 is 113364165.

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

It is not a de Polignac number, because 561463311 - 2⁶ = 561463247 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 (561463313) 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, 93577216 + ... + 93577221.

It is an arithmetic number, because the mean of its divisors is an integer number (187154438).

Almost surely, 2^561463311 is an apocalyptic number.

561463311 is a deficient number, since it is larger than the sum of its proper divisors (187154441).

561463311 is a wasteful number, since it uses less digits than its factorization.

561463311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187154440.

The product of its digits is 6480, while the sum is 30.

The square root of 561463311 is about 23695.2170490165. The cubic root of 561463311 is about 824.9743786350.

The spelling of 561463311 in words is "five hundred sixty-one million, four hundred sixty-three thousand, three hundred eleven".