1292591 has 2 divisors, whose sum is σ = 1292592. Its totient is φ = 1292590.

The previous prime is 1292587. The next prime is 1292593. The reversal of 1292591 is 1952921.

It is a strong prime.

It is an emirp because it is prime and its reverse (1952921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1292591 - 2² = 1292587 is a prime.

Together with 1292593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1292593) 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, 646295 + 646296.

It is an arithmetic number, because the mean of its divisors is an integer number (646296).

2^1292591 is an apocalyptic number.

1292591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292591 is an equidigital number, since it uses as much as digits as its factorization.

1292591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 29.

The square root of 1292591 is about 1136.9217211400. The cubic root of 1292591 is about 108.9315565044.

The spelling of 1292591 in words is "one million, two hundred ninety-two thousand, five hundred ninety-one".