5551102661 has 16 divisors (see below), whose sum is σ = 6015583728. Its totient is φ = 5092070400.

The previous prime is 5551102621. The next prime is 5551102679. The reversal of 5551102661 is 1662011555.

It can be written as a sum of positive squares in 8 ways, for example, as 1565705761 + 3985396900 = 39569^2 + 63130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551102661 is a prime.

It is a super-2 number, since 2×5551102661² = 61629481505922561842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551102621) 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, 1743491 + ... + 1746671.

It is an arithmetic number, because the mean of its divisors is an integer number (375973983).

Almost surely, 2^5551102661 is an apocalyptic number.

It is an amenable number.

5551102661 is a deficient number, since it is larger than the sum of its proper divisors (464481067).

5551102661 is a wasteful number, since it uses less digits than its factorization.

5551102661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 5551102661 is about 74505.7223372809. The cubic root of 5551102661 is about 1770.6242981682.

The spelling of 5551102661 in words is "five billion, five hundred fifty-one million, one hundred two thousand, six hundred sixty-one".