561481922 has 4 divisors (see below), whose sum is σ = 842222886. Its totient is φ = 280740960.

The previous prime is 561481903. The next prime is 561481961. The reversal of 561481922 is 229184165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 475196401 + 86285521 = 21799^2 + 9289^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 140370479 + ... + 140370482.

Almost surely, 2^561481922 is an apocalyptic number.

561481922 is a deficient number, since it is larger than the sum of its proper divisors (280740964).

561481922 is a wasteful number, since it uses less digits than its factorization.

561481922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280740963.

The product of its digits is 34560, while the sum is 38.

The square root of 561481922 is about 23695.6097621479. The cubic root of 561481922 is about 824.9834937622.

The spelling of 561481922 in words is "five hundred sixty-one million, four hundred eighty-one thousand, nine hundred twenty-two".