1519591 has 2 divisors, whose sum is σ = 1519592. Its totient is φ = 1519590.

The previous prime is 1519561. The next prime is 1519597. The reversal of 1519591 is 1959151.

It is a strong prime.

It is an emirp because it is prime and its reverse (1959151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1519591 - 2¹⁹ = 995303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1519597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759795 + 759796.

It is an arithmetic number, because the mean of its divisors is an integer number (759796).

2^1519591 is an apocalyptic number.

1519591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1519591 is an equidigital number, since it uses as much as digits as its factorization.

1519591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2025, while the sum is 31.

The square root of 1519591 is about 1232.7169180311. The cubic root of 1519591 is about 114.9676279393.

The spelling of 1519591 in words is "one million, five hundred nineteen thousand, five hundred ninety-one".