561124577 has 4 divisors (see below), whose sum is σ = 604288020. Its totient is φ = 517961136.

The previous prime is 561124547. The next prime is 561124591. The reversal of 561124577 is 775421165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775421165 = 5 ⋅155084233.

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 485364961 = 8704^2 + 22031^2 .

It is a cyclic number.

It is not a de Polignac number, because 561124577 - 2¹⁴ = 561108193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561124577.

It is not an unprimeable number, because it can be changed into a prime (561124507) 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, 21581702 + ... + 21581727.

It is an arithmetic number, because the mean of its divisors is an integer number (151072005).

Almost surely, 2^561124577 is an apocalyptic number.

It is an amenable number.

561124577 is a deficient number, since it is larger than the sum of its proper divisors (43163443).

561124577 is a wasteful number, since it uses less digits than its factorization.

561124577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43163442.

The product of its digits is 58800, while the sum is 38.

The square root of 561124577 is about 23688.0682412053. The cubic root of 561124577 is about 824.8084413530.

The spelling of 561124577 in words is "five hundred sixty-one million, one hundred twenty-four thousand, five hundred seventy-seven".