5655601581 has 16 divisors (see below), whose sum is σ = 8620608000. Its totient is φ = 3230816688.

The previous prime is 5655601543. The next prime is 5655601613. The reversal of 5655601581 is 1851065565.

5655601581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5655601581 - 2¹¹ = 5655599533 is a prime.

It is a super-2 number, since 2×5655601581² = 63971658486019399122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655601981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36270 + ... + 112368.

It is an arithmetic number, because the mean of its divisors is an integer number (538788000).

Almost surely, 2^5655601581 is an apocalyptic number.

It is an amenable number.

5655601581 is a deficient number, since it is larger than the sum of its proper divisors (2965006419).

5655601581 is a wasteful number, since it uses less digits than its factorization.

5655601581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79648.

The product of its (nonzero) digits is 180000, while the sum is 42.

The square root of 5655601581 is about 75203.7338235277. The cubic root of 5655601581 is about 1781.6659046211.

The spelling of 5655601581 in words is "five billion, six hundred fifty-five million, six hundred one thousand, five hundred eighty-one".