1291522 has 16 divisors (see below), whose sum is σ = 2057472. Its totient is φ = 606960.

The previous prime is 1291501. The next prime is 1291523. The reversal of 1291522 is 2251921.

It is a junction number, because it is equal to n+sod(n) for n = 1291493 and 1291502.

It is not an unprimeable number, because it can be changed into a prime (1291523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 2575.

It is an arithmetic number, because the mean of its divisors is an integer number (128592).

2^1291522 is an apocalyptic number.

1291522 is a deficient number, since it is larger than the sum of its proper divisors (765950).

1291522 is a wasteful number, since it uses less digits than its factorization.

1291522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its digits is 360, while the sum is 22.

The square root of 1291522 is about 1136.4514947854. The cubic root of 1291522 is about 108.9015186578.

The spelling of 1291522 in words is "one million, two hundred ninety-one thousand, five hundred twenty-two".