275200621 has 2 divisors, whose sum is σ = 275200622. Its totient is φ = 275200620.

The previous prime is 275200619. The next prime is 275200657. The reversal of 275200621 is 126002572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249292521 + 25908100 = 15789^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 275200621 - 2¹ = 275200619 is a prime.

Together with 275200619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275200661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137600310 + 137600311.

It is an arithmetic number, because the mean of its divisors is an integer number (137600311).

Almost surely, 2^275200621 is an apocalyptic number.

It is an amenable number.

275200621 is a deficient number, since it is larger than the sum of its proper divisors (1).

275200621 is an equidigital number, since it uses as much as digits as its factorization.

275200621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 275200621 is about 16589.1717997012. The cubic root of 275200621 is about 650.4538219294.

The spelling of 275200621 in words is "two hundred seventy-five million, two hundred thousand, six hundred twenty-one".