561057442 has 8 divisors (see below), whose sum is σ = 918094032. Its totient is φ = 255026100.

The previous prime is 561057401. The next prime is 561057451. The reversal of 561057442 is 244750165.

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

It is a junction number, because it is equal to n+sod(n) for n = 561057398 and 561057407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12751284 + ... + 12751327.

It is an arithmetic number, because the mean of its divisors is an integer number (114761754).

Almost surely, 2^561057442 is an apocalyptic number.

561057442 is a deficient number, since it is larger than the sum of its proper divisors (357036590).

561057442 is a wasteful number, since it uses less digits than its factorization.

561057442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25502624.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 561057442 is about 23686.6511351858. The cubic root of 561057442 is about 824.7755456732.

The spelling of 561057442 in words is "five hundred sixty-one million, fifty-seven thousand, four hundred forty-two".