561874001 has 12 divisors (see below), whose sum is σ = 609752052. Its totient is φ = 514691424.

The previous prime is 561873997. The next prime is 561874037. The reversal of 561874001 is 100478165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 259983376 + 301890625 = 16124^2 + 17375^2 .

It is not a de Polignac number, because 561874001 - 2² = 561873997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561874091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250055 + ... + 252291.

It is an arithmetic number, because the mean of its divisors is an integer number (50812671).

Almost surely, 2^561874001 is an apocalyptic number.

It is an amenable number.

561874001 is a deficient number, since it is larger than the sum of its proper divisors (47878051).

561874001 is a wasteful number, since it uses less digits than its factorization.

561874001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 561874001 is about 23703.8815597783. The cubic root of 561874001 is about 825.1754758665.

The spelling of 561874001 in words is "five hundred sixty-one million, eight hundred seventy-four thousand, one".