561074478 has 16 divisors (see below), whose sum is σ = 1125760896. Its totient is φ = 186422840.

The previous prime is 561074471. The next prime is 561074543. The reversal of 561074478 is 874470165.

It is a super-4 number, since 4×561074478⁴ (a number of 36 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561074471) 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 7 ways as a sum of consecutive naturals, for example, 148476 + ... + 152207.

It is an arithmetic number, because the mean of its divisors is an integer number (70360056).

Almost surely, 2^561074478 is an apocalyptic number.

561074478 is an abundant number, since it is smaller than the sum of its proper divisors (564686418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561074478 is a wasteful number, since it uses less digits than its factorization.

561074478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300999.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 561074478 is about 23687.0107442877. The cubic root of 561074478 is about 824.7838934423.

The spelling of 561074478 in words is "five hundred sixty-one million, seventy-four thousand, four hundred seventy-eight".