1661550050 has 12 divisors (see below), whose sum is σ = 3090483186. Its totient is φ = 664620000.

The previous prime is 1661550013. The next prime is 1661550071. The reversal of 1661550050 is 500551661.

It can be written as a sum of positive squares in 3 ways, for example, as 964537249 + 697012801 = 31057^2 + 26401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1661549995 and 1661550022.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16615451 + ... + 16615550.

Almost surely, 2^1661550050 is an apocalyptic number.

1661550050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661550050 is a deficient number, since it is larger than the sum of its proper divisors (1428933136).

1661550050 is a wasteful number, since it uses less digits than its factorization.

1661550050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33231013 (or 33231008 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1661550050 is about 40762.1153769036. The cubic root of 1661550050 is about 1184.4165738221.

The spelling of 1661550050 in words is "one billion, six hundred sixty-one million, five hundred fifty thousand, fifty".