381572285 has 8 divisors (see below), whose sum is σ = 473676120. Its totient is φ = 294731584.

The previous prime is 381572251. The next prime is 381572297. The reversal of 381572285 is 582275183.

It can be written as a sum of positive squares in 4 ways, for example, as 2647129 + 378925156 = 1627^2 + 19466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381572285 - 2⁶ = 381572221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315622 + ... + 1315911.

It is an arithmetic number, because the mean of its divisors is an integer number (59209515).

Almost surely, 2^381572285 is an apocalyptic number.

It is an amenable number.

381572285 is a deficient number, since it is larger than the sum of its proper divisors (92103835).

381572285 is a wasteful number, since it uses less digits than its factorization.

381572285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631567.

The product of its digits is 134400, while the sum is 41.

The square root of 381572285 is about 19533.8753195570. The cubic root of 381572285 is about 725.3132439505.

The spelling of 381572285 in words is "three hundred eighty-one million, five hundred seventy-two thousand, two hundred eighty-five".