210473245 has 4 divisors (see below), whose sum is σ = 252567900. Its totient is φ = 168378592.

The previous prime is 210473233. The next prime is 210473251. The reversal of 210473245 is 542374012.

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 24068836 + 186404409 = 4906^2 + 13653^2 .

It is a cyclic number.

It is not a de Polignac number, because 210473245 - 2⁷ = 210473117 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 21047320 + ... + 21047329.

It is an arithmetic number, because the mean of its divisors is an integer number (63141975).

Almost surely, 2^210473245 is an apocalyptic number.

It is an amenable number.

210473245 is a deficient number, since it is larger than the sum of its proper divisors (42094655).

210473245 is an equidigital number, since it uses as much as digits as its factorization.

210473245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42094654.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 210473245 is about 14507.6960610567. The cubic root of 210473245 is about 594.8383573336.

The spelling of 210473245 in words is "two hundred ten million, four hundred seventy-three thousand, two hundred forty-five".