381377 has 2 divisors, whose sum is σ = 381378. Its totient is φ = 381376.

The previous prime is 381373. The next prime is 381383. The reversal of 381377 is 773183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201601 + 179776 = 449^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 381377 - 2² = 381373 is a prime.

It is a super-2 number, since 2×381377² = 290896832258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190688 + 190689.

It is an arithmetic number, because the mean of its divisors is an integer number (190689).

2³⁸¹³⁷⁷ is an apocalyptic number.

It is an amenable number.

381377 is a deficient number, since it is larger than the sum of its proper divisors (1).

381377 is an equidigital number, since it uses as much as digits as its factorization.

381377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 381377 is about 617.5572847923. The cubic root of 381377 is about 72.5189486738.

It can be divided in two parts, 38 and 1377, that multiplied together give a triangular number (52326 = T₃₂₃).

The spelling of 381377 in words is "three hundred eighty-one thousand, three hundred seventy-seven".