5661522450 has 72 divisors (see below), whose sum is σ = 15871984128. Its totient is φ = 1444095840.

The previous prime is 5661522367. The next prime is 5661522479. The reversal of 5661522450 is 542251665.

5661522450 is a `hidden beast` number, since 56 + 6 + 152 + 2 + 450 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 263154 + ... + 283853.

It is an arithmetic number, because the mean of its divisors is an integer number (220444224).

Almost surely, 2^5661522450 is an apocalyptic number.

5661522450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5661522450 is an abundant number, since it is smaller than the sum of its proper divisors (10210461678).

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

5661522450 is a wasteful number, since it uses less digits than its factorization.

5661522450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547048 (or 547040 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 5661522450 is about 75243.0890514205. The cubic root of 5661522450 is about 1782.2874318596.

The spelling of 5661522450 in words is "five billion, six hundred sixty-one million, five hundred twenty-two thousand, four hundred fifty".