1012591 has 2 divisors, whose sum is σ = 1012592. Its totient is φ = 1012590.

The previous prime is 1012573. The next prime is 1012597. The reversal of 1012591 is 1952101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012591 - 2⁵ = 1012559 is a prime.

1012591 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506295 + 506296.

It is an arithmetic number, because the mean of its divisors is an integer number (506296).

2^1012591 is an apocalyptic number.

1012591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012591 is an equidigital number, since it uses as much as digits as its factorization.

1012591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1012591 is about 1006.2758071225. The cubic root of 1012591 is about 100.4179507382.

Adding to 1012591 its reverse (1952101), we get a palindrome (2964692).

The spelling of 1012591 in words is "one million, twelve thousand, five hundred ninety-one".