5571661755 has 32 divisors (see below), whose sum is σ = 9889931520. Its totient is φ = 2655620480.

The previous prime is 5571661717. The next prime is 5571661769.

5571661755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5571661755 - 2¹⁸ = 5571399611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276432 + ... + 295901.

It is an arithmetic number, because the mean of its divisors is an integer number (309060360).

Almost surely, 2^5571661755 is an apocalyptic number.

5571661755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5571661755 is a deficient number, since it is larger than the sum of its proper divisors (4318269765).

5571661755 is a wasteful number, since it uses less digits than its factorization.

5571661755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572411.

The product of its digits is 1102500, while the sum is 48.

The square root of 5571661755 is about 74643.5647259695. The cubic root of 5571661755 is about 1772.8075030654.

The spelling of 5571661755 in words is "five billion, five hundred seventy-one million, six hundred sixty-one thousand, seven hundred fifty-five".