1561352046 has 64 divisors (see below), whose sum is σ = 3376028160. Its totient is φ = 479590400.

The previous prime is 1561352003. The next prime is 1561352087. The reversal of 1561352046 is 6402531651.

It is a super-2 number, since 2×1561352046² = 4875640423096772232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1561351998 and 1561352016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2412895 + ... + 2413541.

It is an arithmetic number, because the mean of its divisors is an integer number (52750440).

Almost surely, 2^1561352046 is an apocalyptic number.

1561352046 is an abundant number, since it is smaller than the sum of its proper divisors (1814676114).

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

1561352046 is a wasteful number, since it uses less digits than its factorization.

1561352046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1561352046 is about 39513.9474869318. The cubic root of 1561352046 is about 1160.1129611556.

Adding to 1561352046 its reverse (6402531651), we get a palindrome (7963883697).

The spelling of 1561352046 in words is "one billion, five hundred sixty-one million, three hundred fifty-two thousand, forty-six".