5526121687 has 2 divisors, whose sum is σ = 5526121688. Its totient is φ = 5526121686.

The previous prime is 5526121649. The next prime is 5526121729. The reversal of 5526121687 is 7861216255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5526121687 - 2¹¹ = 5526119639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5526121637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2763060843 + 2763060844.

It is an arithmetic number, because the mean of its divisors is an integer number (2763060844).

Almost surely, 2^5526121687 is an apocalyptic number.

5526121687 is a deficient number, since it is larger than the sum of its proper divisors (1).

5526121687 is an equidigital number, since it uses as much as digits as its factorization.

5526121687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 5526121687 is about 74337.8886369528. Note that the first 3 decimals coincide. The cubic root of 5526121687 is about 1767.9642599013.

The spelling of 5526121687 in words is "five billion, five hundred twenty-six million, one hundred twenty-one thousand, six hundred eighty-seven".