387771253 has 2 divisors, whose sum is σ = 387771254. Its totient is φ = 387771252.

The previous prime is 387771229. The next prime is 387771271. The reversal of 387771253 is 352177783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377058724 + 10712529 = 19418^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 387771253 - 2⁵ = 387771221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387771353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193885626 + 193885627.

It is an arithmetic number, because the mean of its divisors is an integer number (193885627).

Almost surely, 2^387771253 is an apocalyptic number.

It is an amenable number.

387771253 is a deficient number, since it is larger than the sum of its proper divisors (1).

387771253 is an equidigital number, since it uses as much as digits as its factorization.

387771253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The square root of 387771253 is about 19691.9083128071. The cubic root of 387771253 is about 729.2199417525.

The spelling of 387771253 in words is "three hundred eighty-seven million, seven hundred seventy-one thousand, two hundred fifty-three".