1561110050 has 48 divisors (see below), whose sum is σ = 3075285312. Its totient is φ = 588350400.

The previous prime is 1561110007. The next prime is 1561110077. The reversal of 1561110050 is 500111651.

It is a super-2 number, since 2×1561110050² = 4874129176422005000, which contains 22 as substring.

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 in 23 ways as a sum of consecutive naturals, for example, 66920 + ... + 87180.

It is an arithmetic number, because the mean of its divisors is an integer number (64068444).

Almost surely, 2^1561110050 is an apocalyptic number.

1561110050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1561110050 is a deficient number, since it is larger than the sum of its proper divisors (1514175262).

1561110050 is a wasteful number, since it uses less digits than its factorization.

1561110050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20363 (or 20358 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1561110050 is about 39510.8852090155. The cubic root of 1561110050 is about 1160.0530222494.

The spelling of 1561110050 in words is "one billion, five hundred sixty-one million, one hundred ten thousand, fifty".