210020497 has 2 divisors, whose sum is σ = 210020498. Its totient is φ = 210020496.

The previous prime is 210020483. The next prime is 210020501. The reversal of 210020497 is 794020012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111534721 + 98485776 = 10561^2 + 9924^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020497 - 2¹¹ = 210018449 is a prime.

It is not a weakly prime, because it can be changed into another prime (210020597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010248 + 105010249.

It is an arithmetic number, because the mean of its divisors is an integer number (105010249).

Almost surely, 2^210020497 is an apocalyptic number.

It is an amenable number.

210020497 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020497 is an equidigital number, since it uses as much as digits as its factorization.

210020497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 210020497 is about 14492.0839426219. The cubic root of 210020497 is about 594.4115331501.

The spelling of 210020497 in words is "two hundred ten million, twenty thousand, four hundred ninety-seven".