1022557 has 6 divisors (see below), whose sum is σ = 1069502. Its totient is φ = 977592.

The previous prime is 1022531. The next prime is 1022573. The reversal of 1022557 is 7552201.

It can be written as a sum of positive squares in only one way, i.e., 933156 + 89401 = 966^2 + 299^2 .

It is not a de Polignac number, because 1022557 - 2⁷ = 1022429 is a prime.

It is a Duffinian number.

1022557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022507) 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 in 5 ways as a sum of consecutive naturals, for example, 438 + ... + 1495.

2^1022557 is an apocalyptic number.

It is an amenable number.

1022557 is a deficient number, since it is larger than the sum of its proper divisors (46945).

1022557 is an equidigital number, since it uses as much as digits as its factorization.

1022557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 1022557 is about 1011.2156051011. The cubic root of 1022557 is about 100.7463162640.

Adding to 1022557 its reverse (7552201), we get a palindrome (8574758).

The spelling of 1022557 in words is "one million, twenty-two thousand, five hundred fifty-seven".