561543148 has 24 divisors (see below), whose sum is σ = 993829760. Its totient is φ = 277603200.

The previous prime is 561543131. The next prime is 561543173. The reversal of 561543148 is 841345165.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260965 + ... + 263107.

Almost surely, 2^561543148 is an apocalyptic number.

It is an amenable number.

561543148 is a deficient number, since it is larger than the sum of its proper divisors (432286612).

561543148 is a wasteful number, since it uses less digits than its factorization.

561543148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2855 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 561543148 is about 23696.9016540138. The cubic root of 561543148 is about 825.0134790574.

The spelling of 561543148 in words is "five hundred sixty-one million, five hundred forty-three thousand, one hundred forty-eight".