152381 has 2 divisors, whose sum is σ = 152382. Its totient is φ = 152380.

The previous prime is 152377. The next prime is 152389. The reversal of 152381 is 183251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 36100 = 341^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 152381 - 2² = 152377 is a prime.

It is a super-2 number, since 2×152381² = 46439938322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76190 + 76191.

It is an arithmetic number, because the mean of its divisors is an integer number (76191).

2¹⁵²³⁸¹ is an apocalyptic number.

It is an amenable number.

152381 is a deficient number, since it is larger than the sum of its proper divisors (1).

152381 is an equidigital number, since it uses as much as digits as its factorization.

152381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 152381 is about 390.3600901732. The cubic root of 152381 is about 53.4125861658.

The spelling of 152381 in words is "one hundred fifty-two thousand, three hundred eighty-one".