1517983 has 2 divisors, whose sum is σ = 1517984. Its totient is φ = 1517982.

The previous prime is 1517941. The next prime is 1517993. The reversal of 1517983 is 3897151.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3897151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1517983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1517933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758991 + 758992.

It is an arithmetic number, because the mean of its divisors is an integer number (758992).

2^1517983 is an apocalyptic number.

1517983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1517983 is an equidigital number, since it uses as much as digits as its factorization.

1517983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 1517983 is about 1232.0645275309. The cubic root of 1517983 is about 114.9270614992.

It can be divided in two parts, 1517 and 983, that added together give a square (2500 = 50²).

The spelling of 1517983 in words is "one million, five hundred seventeen thousand, nine hundred eighty-three".