561073279 has 4 divisors (see below), whose sum is σ = 604232776. Its totient is φ = 517913784.

The previous prime is 561073243. The next prime is 561073301. The reversal of 561073279 is 972370165.

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 561073279 - 2⁹ = 561072767 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 (561073229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21579729 + ... + 21579754.

It is an arithmetic number, because the mean of its divisors is an integer number (151058194).

Almost surely, 2^561073279 is an apocalyptic number.

561073279 is a deficient number, since it is larger than the sum of its proper divisors (43159497).

561073279 is a wasteful number, since it uses less digits than its factorization.

561073279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43159496.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 561073279 is about 23686.9854350443. The cubic root of 561073279 is about 824.7833059288.

The spelling of 561073279 in words is "five hundred sixty-one million, seventy-three thousand, two hundred seventy-nine".