561171512 has 32 divisors (see below), whose sum is σ = 1156636800. Its totient is φ = 253125600.

The previous prime is 561171511. The next prime is 561171521. The reversal of 561171512 is 215171165.

It is a super-2 number, since 2×561171512² = 629826931760732288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561171511) 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, 12812 + ... + 35867.

It is an arithmetic number, because the mean of its divisors is an integer number (36144900).

Almost surely, 2^561171512 is an apocalyptic number.

It is an amenable number.

561171512 is an abundant number, since it is smaller than the sum of its proper divisors (595465288).

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

561171512 is a wasteful number, since it uses less digits than its factorization.

561171512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48827 (or 48823 counting only the distinct ones).

The product of its digits is 2100, while the sum is 29.

The square root of 561171512 is about 23689.0589091251. The cubic root of 561171512 is about 824.8314376159.

The spelling of 561171512 in words is "five hundred sixty-one million, one hundred seventy-one thousand, five hundred twelve".