1381527 has 12 divisors (see below), whose sum is σ = 2280720. Its totient is φ = 789408.

The previous prime is 1381519. The next prime is 1381529. The reversal of 1381527 is 7251831.

1381527 is a `hidden beast` number, since 138 + 1 + 527 = 666.

It is not a de Polignac number, because 1381527 - 2³ = 1381519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1381527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10902 + ... + 11027.

It is an arithmetic number, because the mean of its divisors is an integer number (190060).

2^1381527 is an apocalyptic number.

1381527 is a deficient number, since it is larger than the sum of its proper divisors (899193).

1381527 is a wasteful number, since it uses less digits than its factorization.

1381527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21942 (or 21939 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1381527 is about 1175.3837671161. The cubic root of 1381527 is about 111.3746773751.

The spelling of 1381527 in words is "one million, three hundred eighty-one thousand, five hundred twenty-seven".