1591122 has 16 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 489552.

The previous prime is 1591103. The next prime is 1591127. The reversal of 1591122 is 2211951.

It is not an unprimeable number, because it can be changed into a prime (1591127) 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, 10122 + ... + 10277.

It is an arithmetic number, because the mean of its divisors is an integer number (214200).

2^1591122 is an apocalyptic number.

1591122 is an abundant number, since it is smaller than the sum of its proper divisors (1836078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1591122 is a wasteful number, since it uses less digits than its factorization.

1591122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417.

The product of its digits is 180, while the sum is 21.

The square root of 1591122 is about 1261.3968447717. The cubic root of 1591122 is about 116.7439795938.

The spelling of 1591122 in words is "one million, five hundred ninety-one thousand, one hundred twenty-two".