561901701 has 4 divisors (see below), whose sum is σ = 749202272. Its totient is φ = 374601132.

The previous prime is 561901699. The next prime is 561901723. The reversal of 561901701 is 107109165.

561901701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 561901701 - 2¹ = 561901699 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 (561901741) 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, 93650281 + ... + 93650286.

It is an arithmetic number, because the mean of its divisors is an integer number (187300568).

Almost surely, 2^561901701 is an apocalyptic number.

It is an amenable number.

561901701 is a deficient number, since it is larger than the sum of its proper divisors (187300571).

561901701 is a wasteful number, since it uses less digits than its factorization.

561901701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187300570.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 561901701 is about 23704.4658450681. The cubic root of 561901701 is about 825.1890358373.

The spelling of 561901701 in words is "five hundred sixty-one million, nine hundred one thousand, seven hundred one".