1561322032 has 10 divisors (see below), whose sum is σ = 3025061468. Its totient is φ = 780661008.

The previous prime is 1561322003. The next prime is 1561322033. The reversal of 1561322032 is 2302231651.

It is a junction number, because it is equal to n+sod(n) for n = 1561321988 and 1561322006.

It is not an unprimeable number, because it can be changed into a prime (1561322033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48791298 + ... + 48791329.

Almost surely, 2^1561322032 is an apocalyptic number.

It is an amenable number.

1561322032 is a deficient number, since it is larger than the sum of its proper divisors (1463739436).

1561322032 is an equidigital number, since it uses as much as digits as its factorization.

1561322032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97582635 (or 97582629 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1561322032 is about 39513.5676951601. The cubic root of 1561322032 is about 1160.1055274587.

Adding to 1561322032 its reverse (2302231651), we get a palindrome (3863553683).

The spelling of 1561322032 in words is "one billion, five hundred sixty-one million, three hundred twenty-two thousand, thirty-two".