16380253 has 2 divisors, whose sum is σ = 16380254. Its totient is φ = 16380252.

The previous prime is 16380191. The next prime is 16380257. The reversal of 16380253 is 35208361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15539364 + 840889 = 3942^2 + 917^2 .

It is an emirp because it is prime and its reverse (35208361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16380253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16380257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190126 + 8190127.

It is an arithmetic number, because the mean of its divisors is an integer number (8190127).

Almost surely, 2^16380253 is an apocalyptic number.

It is an amenable number.

16380253 is a deficient number, since it is larger than the sum of its proper divisors (1).

16380253 is an equidigital number, since it uses as much as digits as its factorization.

16380253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 16380253 is about 4047.2525248618. The cubic root of 16380253 is about 253.9648048864.

The spelling of 16380253 in words is "sixteen million, three hundred eighty thousand, two hundred fifty-three".