561520148 has 24 divisors (see below), whose sum is σ = 1182148800. Its totient is φ = 227985408.

The previous prime is 561520121. The next prime is 561520153. The reversal of 561520148 is 841025165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527213 + ... + 528276.

It is an arithmetic number, because the mean of its divisors is an integer number (49256200).

Almost surely, 2^561520148 is an apocalyptic number.

It is an amenable number.

561520148 is an abundant number, since it is smaller than the sum of its proper divisors (620628652).

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

561520148 is a wasteful number, since it uses less digits than its factorization.

561520148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055519 (or 1055517 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 561520148 is about 23696.4163535333. The cubic root of 561520148 is about 825.0022151150.

The spelling of 561520148 in words is "five hundred sixty-one million, five hundred twenty thousand, one hundred forty-eight".