561051601 has 8 divisors (see below), whose sum is σ = 619804800. Its totient is φ = 503589840.

The previous prime is 561051593. The next prime is 561051607. The reversal of 561051601 is 106150165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561051601 - 2³ = 561051593 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 321946 + ... + 323683.

It is an arithmetic number, because the mean of its divisors is an integer number (77475600).

Almost surely, 2^561051601 is an apocalyptic number.

It is an amenable number.

561051601 is a deficient number, since it is larger than the sum of its proper divisors (58753199).

561051601 is a wasteful number, since it uses less digits than its factorization.

561051601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645719.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 561051601 is about 23686.5278375705. The cubic root of 561051601 is about 824.7726835000.

The spelling of 561051601 in words is "five hundred sixty-one million, fifty-one thousand, six hundred one".