2106525697 has 4 divisors (see below), whose sum is σ = 2109713236. Its totient is φ = 2103338160.

The previous prime is 2106525689. The next prime is 2106525727. The reversal of 2106525697 is 7965256012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1813397056 + 293128641 = 42584^2 + 17121^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106525697 - 2³ = 2106525689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106525997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592778 + ... + 1594099.

It is an arithmetic number, because the mean of its divisors is an integer number (527428309).

Almost surely, 2^2106525697 is an apocalyptic number.

It is an amenable number.

2106525697 is a deficient number, since it is larger than the sum of its proper divisors (3187539).

2106525697 is an equidigital number, since it uses as much as digits as its factorization.

2106525697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187538.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 2106525697 is about 45896.9029129417. The cubic root of 2106525697 is about 1281.9042491905.

The spelling of 2106525697 in words is "two billion, one hundred six million, five hundred twenty-five thousand, six hundred ninety-seven".