1505983 has 2 divisors, whose sum is σ = 1505984. Its totient is φ = 1505982.

The previous prime is 1505953. The next prime is 1505993. The reversal of 1505983 is 3895051.

It is a strong prime.

It is an emirp because it is prime and its reverse (3895051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1505983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1505953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752991 + 752992.

It is an arithmetic number, because the mean of its divisors is an integer number (752992).

2^1505983 is an apocalyptic number.

1505983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1505983 is an equidigital number, since it uses as much as digits as its factorization.

1505983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1505983 is about 1227.1849901298. The cubic root of 1505983 is about 114.6234184674.

The spelling of 1505983 in words is "one million, five hundred five thousand, nine hundred eighty-three".