561551132 has 12 divisors (see below), whose sum is σ = 982960440. Its totient is φ = 280705296.

The previous prime is 561551131. The next prime is 561551171. The reversal of 561551132 is 231155165.

It is a junction number, because it is equal to n+sod(n) for n = 561551095 and 561551104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561551131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3119 + ... + 33657.

It is an arithmetic number, because the mean of its divisors is an integer number (81913370).

Almost surely, 2^561551132 is an apocalyptic number.

It is an amenable number.

561551132 is a deficient number, since it is larger than the sum of its proper divisors (421409308).

561551132 is a wasteful number, since it uses less digits than its factorization.

561551132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35140 (or 35138 counting only the distinct ones).

The product of its digits is 4500, while the sum is 29.

The square root of 561551132 is about 23697.0701142567. The cubic root of 561551132 is about 825.0173890427.

The spelling of 561551132 in words is "five hundred sixty-one million, five hundred fifty-one thousand, one hundred thirty-two".