1561200046 has 32 divisors (see below), whose sum is σ = 2739529728. Its totient is φ = 653469120.

The previous prime is 1561200029. The next prime is 1561200071. The reversal of 1561200046 is 6400021651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97851 + ... + 112681.

It is an arithmetic number, because the mean of its divisors is an integer number (85610304).

Almost surely, 2^1561200046 is an apocalyptic number.

1561200046 is a deficient number, since it is larger than the sum of its proper divisors (1178329682).

1561200046 is a wasteful number, since it uses less digits than its factorization.

1561200046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15016.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1561200046 is about 39512.0240686300. The cubic root of 1561200046 is about 1160.0753136793.

Adding to 1561200046 its reverse (6400021651), we get a palindrome (7961221697).

The spelling of 1561200046 in words is "one billion, five hundred sixty-one million, two hundred thousand, forty-six".