210075397 has 6 divisors (see below), whose sum is σ = 244373478. Its totient is φ = 180064584.

The previous prime is 210075379. The next prime is 210075403. The reversal of 210075397 is 793570012.

210075397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 128913316 + 81162081 = 11354^2 + 9009^2 .

It is not a de Polignac number, because 210075397 - 2⁷ = 210075269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210075337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2143578 + ... + 2143675.

It is an arithmetic number, because the mean of its divisors is an integer number (40728913).

Almost surely, 2^210075397 is an apocalyptic number.

It is an amenable number.

210075397 is a deficient number, since it is larger than the sum of its proper divisors (34298081).

210075397 is an equidigital number, since it uses as much as digits as its factorization.

210075397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287267 (or 4287260 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 210075397 is about 14493.9779563790. The cubic root of 210075397 is about 594.4633223017.

The spelling of 210075397 in words is "two hundred ten million, seventy-five thousand, three hundred ninety-seven".