5861661553 has 16 divisors (see below), whose sum is σ = 6504482880. Its totient is φ = 5237928000.

The previous prime is 5861661529. The next prime is 5861661563. The reversal of 5861661553 is 3551661685.

It is a cyclic number.

It is not a de Polignac number, because 5861661553 - 2⁵ = 5861661521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5861661503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 135451 + ... + 173407.

It is an arithmetic number, because the mean of its divisors is an integer number (406530180).

Almost surely, 2^5861661553 is an apocalyptic number.

It is an amenable number.

5861661553 is a deficient number, since it is larger than the sum of its proper divisors (642821327).

5861661553 is a wasteful number, since it uses less digits than its factorization.

5861661553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38208.

The product of its digits is 648000, while the sum is 46.

The square root of 5861661553 is about 76561.4887067904. The cubic root of 5861661553 is about 1803.0464411919.

The spelling of 5861661553 in words is "five billion, eight hundred sixty-one million, six hundred sixty-one thousand, five hundred fifty-three".