5551571611 has 4 divisors (see below), whose sum is σ = 5564218000. Its totient is φ = 5538925224.

The previous prime is 5551571593. The next prime is 5551571621. The reversal of 5551571611 is 1161751555.

5551571611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1161751555 = 5 ⋅232350311.

It is a cyclic number.

It is not a de Polignac number, because 5551571611 - 2¹¹ = 5551569563 is a prime.

It is a super-2 number, since 2×5551571611² = 61639894704122270642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5551571621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6322536 + ... + 6323413.

It is an arithmetic number, because the mean of its divisors is an integer number (1391054500).

Almost surely, 2^5551571611 is an apocalyptic number.

5551571611 is a deficient number, since it is larger than the sum of its proper divisors (12646389).

5551571611 is a wasteful number, since it uses less digits than its factorization.

5551571611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12646388.

The product of its digits is 26250, while the sum is 37.

The square root of 5551571611 is about 74508.8693445284. The cubic root of 5551571611 is about 1770.6741567840.

The spelling of 5551571611 in words is "five billion, five hundred fifty-one million, five hundred seventy-one thousand, six hundred eleven".