5528387691 has 12 divisors (see below), whose sum is σ = 8008466232. Its totient is φ = 3674968416.

The previous prime is 5528387659. The next prime is 5528387693. The reversal of 5528387691 is 1967838255.

5528387691 is a `hidden beast` number, since 552 + 8 + 3 + 87 + 6 + 9 + 1 = 666.

It is not a de Polignac number, because 5528387691 - 2⁵ = 5528387659 is a prime.

It is a super-2 number, since 2×5528387691² = 61126140924000622962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5528387693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881986 + ... + 888231.

It is an arithmetic number, because the mean of its divisors is an integer number (667372186).

Almost surely, 2^5528387691 is an apocalyptic number.

5528387691 is a deficient number, since it is larger than the sum of its proper divisors (2480078541).

5528387691 is a wasteful number, since it uses less digits than its factorization.

5528387691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770570 (or 1770567 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 5528387691 is about 74353.1283201991. The cubic root of 5528387691 is about 1768.2058800253.

The spelling of 5528387691 in words is "five billion, five hundred twenty-eight million, three hundred eighty-seven thousand, six hundred ninety-one".