1022553 has 12 divisors (see below), whose sum is σ = 1688128. Its totient is φ = 584280.

The previous prime is 1022531. The next prime is 1022573. The reversal of 1022553 is 3552201.

It is a happy number.

It is not a de Polignac number, because 1022553 - 2¹³ = 1014361 is a prime.

It is a super-2 number, since 2×1022553² = 2091229275618, which contains 22 as substring.

It is a Duffinian number.

1022553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1022503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8053 + ... + 8178.

2^1022553 is an apocalyptic number.

It is an amenable number.

1022553 is a deficient number, since it is larger than the sum of its proper divisors (665575).

1022553 is a wasteful number, since it uses less digits than its factorization.

1022553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244 (or 16241 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1022553 is about 1011.2136272816. The cubic root of 1022553 is about 100.7461848986.

Adding to 1022553 its reverse (3552201), we get a palindrome (4574754).

The spelling of 1022553 in words is "one million, twenty-two thousand, five hundred fifty-three".