1283015 has 4 divisors (see below), whose sum is σ = 1539624. Its totient is φ = 1026408.

The previous prime is 1283011. The next prime is 1283017. The reversal of 1283015 is 5103821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5103821 = 311 ⋅16411.

It is a cyclic number.

It is not a de Polignac number, because 1283015 - 2² = 1283011 is a prime.

It is a super-2 number, since 2×1283015² = 3292254980450, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128297 + ... + 128306.

It is an arithmetic number, because the mean of its divisors is an integer number (384906).

2^1283015 is an apocalyptic number.

1283015 is a deficient number, since it is larger than the sum of its proper divisors (256609).

1283015 is an equidigital number, since it uses as much as digits as its factorization.

1283015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256608.

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

The square root of 1283015 is about 1132.7025205234. The cubic root of 1283015 is about 108.6618874952.

Adding to 1283015 its reverse (5103821), we get a palindrome (6386836).

The spelling of 1283015 in words is "one million, two hundred eighty-three thousand, fifteen".