381523775 has 12 divisors (see below), whose sum is σ = 500918832. Its totient is φ = 287264640.

The previous prime is 381523759. The next prime is 381523811. The reversal of 381523775 is 577325183.

It is not a de Polignac number, because 381523775 - 2⁴ = 381523759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448427 + ... + 449276.

It is an arithmetic number, because the mean of its divisors is an integer number (41743236).

Almost surely, 2^381523775 is an apocalyptic number.

381523775 is a deficient number, since it is larger than the sum of its proper divisors (119395057).

381523775 is a wasteful number, since it uses less digits than its factorization.

381523775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897730 (or 897725 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 381523775 is about 19532.6335909933. The cubic root of 381523775 is about 725.2825058370.

The spelling of 381523775 in words is "three hundred eighty-one million, five hundred twenty-three thousand, seven hundred seventy-five".