5661510255 has 128 divisors (see below), whose sum is σ = 11048140800. Its totient is φ = 2739474432.

The previous prime is 5661510241. The next prime is 5661510263. The reversal of 5661510255 is 5520151665.

5661510255 is a `hidden beast` number, since 5 + 6 + 615 + 10 + 25 + 5 = 666.

It is not a de Polignac number, because 5661510255 - 2¹² = 5661506159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7873786 + ... + 7874504.

It is an arithmetic number, because the mean of its divisors is an integer number (86313600).

Almost surely, 2^5661510255 is an apocalyptic number.

5661510255 is a deficient number, since it is larger than the sum of its proper divisors (5386630545).

5661510255 is a wasteful number, since it uses less digits than its factorization.

5661510255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 5661510255 is about 75243.0080140341. The cubic root of 5661510255 is about 1782.2861521678.

The spelling of 5661510255 in words is "five billion, six hundred sixty-one million, five hundred ten thousand, two hundred fifty-five".