561034487 has 4 divisors (see below), whose sum is σ = 604191000. Its totient is φ = 517877976.

The previous prime is 561034457. The next prime is 561034499. The reversal of 561034487 is 784430165.

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 561034487 - 2¹⁴ = 561018103 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 561034487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561034417) 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, 21578237 + ... + 21578262.

It is an arithmetic number, because the mean of its divisors is an integer number (151047750).

Almost surely, 2^561034487 is an apocalyptic number.

561034487 is a deficient number, since it is larger than the sum of its proper divisors (43156513).

561034487 is a wasteful number, since it uses less digits than its factorization.

561034487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43156512.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 561034487 is about 23686.1665746064. The cubic root of 561034487 is about 824.7642972819.

The spelling of 561034487 in words is "five hundred sixty-one million, thirty-four thousand, four hundred eighty-seven".