210253541 has 2 divisors, whose sum is σ = 210253542. Its totient is φ = 210253540.

The previous prime is 210253493. The next prime is 210253583. The reversal of 210253541 is 145352012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200109316 + 10144225 = 14146^2 + 3185^2 .

It is a cyclic number.

It is not a de Polignac number, because 210253541 - 2¹⁰ = 210252517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210853541) 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 as a sum of consecutive naturals, namely, 105126770 + 105126771.

It is an arithmetic number, because the mean of its divisors is an integer number (105126771).

Almost surely, 2^210253541 is an apocalyptic number.

It is an amenable number.

210253541 is a deficient number, since it is larger than the sum of its proper divisors (1).

210253541 is an equidigital number, since it uses as much as digits as its factorization.

210253541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 210253541 is about 14500.1221029342. The cubic root of 210253541 is about 594.6313098517.

The spelling of 210253541 in words is "two hundred ten million, two hundred fifty-three thousand, five hundred forty-one".