561051647 has 16 divisors (see below), whose sum is σ = 617298528. Its totient is φ = 506787840.

The previous prime is 561051637. The next prime is 561051691. The reversal of 561051647 is 746150165.

It is a de Polignac number, because none of the positive numbers 2^k-561051647 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 (561051607) 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, 122063 + ... + 126575.

It is an arithmetic number, because the mean of its divisors is an integer number (38581158).

Almost surely, 2^561051647 is an apocalyptic number.

561051647 is a deficient number, since it is larger than the sum of its proper divisors (56246881).

561051647 is a wasteful number, since it uses less digits than its factorization.

561051647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 561051647 is about 23686.5288085865. The cubic root of 561051647 is about 824.7727060407.

The spelling of 561051647 in words is "five hundred sixty-one million, fifty-one thousand, six hundred forty-seven".