5661509050 has 96 divisors (see below), whose sum is σ = 11125738800. Its totient is φ = 2140508160.

The previous prime is 5661509047. The next prime is 5661509053. The reversal of 5661509050 is 509051665.

It is a Cunningham number, because it is equal to 75243²+1.

It is an interprime number because it is at equal distance from previous prime (5661509047) and next prime (5661509053).

It can be written as a sum of positive squares in 24 ways, for example, as 1953551601 + 3707957449 = 44199^2 + 60893^2 .

It is not an unprimeable number, because it can be changed into a prime (5661509053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17859492 + ... + 17859808.

Almost surely, 2^5661509050 is an apocalyptic number.

5661509050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5661509050 is a deficient number, since it is larger than the sum of its proper divisors (5464229750).

5661509050 is a wasteful number, since it uses less digits than its factorization.

5661509050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 5661509050 is about 75243.0000066451. Note that the first 5 decimals coincide. The cubic root of 5661509050 is about 1782.2860257201.

The spelling of 5661509050 in words is "five billion, six hundred sixty-one million, five hundred nine thousand, fifty".