387161 has 2 divisors, whose sum is σ = 387162. Its totient is φ = 387160.

The previous prime is 387151. The next prime is 387169. The reversal of 387161 is 161783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 175561 = 460^2 + 419^2 .

It is an emirp because it is prime and its reverse (161783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387161 - 2¹⁸ = 125017 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 387161.

It is not a weakly prime, because it can be changed into another prime (387169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193580 + 193581.

It is an arithmetic number, because the mean of its divisors is an integer number (193581).

2³⁸⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

387161 is a deficient number, since it is larger than the sum of its proper divisors (1).

387161 is an equidigital number, since it uses as much as digits as its factorization.

387161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 387161 is about 622.2226289681. Note that the first 3 decimals coincide. The cubic root of 387161 is about 72.8837205538.

The spelling of 387161 in words is "three hundred eighty-seven thousand, one hundred sixty-one".