5661859481 has 4 divisors (see below), whose sum is σ = 5662076112. Its totient is φ = 5661642852.

The previous prime is 5661859471. The next prime is 5661859523. The reversal of 5661859481 is 1849581665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5661859481 - 2²⁶ = 5594750617 is a prime.

It is a super-2 number, since 2×5661859481² = 64113305565179178722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5661859451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 62711 + ... + 123516.

It is an arithmetic number, because the mean of its divisors is an integer number (1415519028).

Almost surely, 2^5661859481 is an apocalyptic number.

It is an amenable number.

5661859481 is a deficient number, since it is larger than the sum of its proper divisors (216631).

5661859481 is a wasteful number, since it uses less digits than its factorization.

5661859481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216630.

The product of its digits is 2073600, while the sum is 53.

The square root of 5661859481 is about 75245.3286324141. The cubic root of 5661859481 is about 1782.3227977411.

The spelling of 5661859481 in words is "five billion, six hundred sixty-one million, eight hundred fifty-nine thousand, four hundred eighty-one".