2102520697 has 2 divisors, whose sum is σ = 2102520698. Its totient is φ = 2102520696.

The previous prime is 2102520661. The next prime is 2102520703. The reversal of 2102520697 is 7960252012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1785823081 + 316697616 = 42259^2 + 17796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102520697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102520197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051260348 + 1051260349.

It is an arithmetic number, because the mean of its divisors is an integer number (1051260349).

Almost surely, 2^2102520697 is an apocalyptic number.

It is an amenable number.

2102520697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102520697 is an equidigital number, since it uses as much as digits as its factorization.

2102520697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2102520697 is about 45853.2517603714. The cubic root of 2102520697 is about 1281.0913334608.

The spelling of 2102520697 in words is "two billion, one hundred two million, five hundred twenty thousand, six hundred ninety-seven".