1022551 has 4 divisors (see below), whose sum is σ = 1024632. Its totient is φ = 1020472.

The previous prime is 1022531. The next prime is 1022573. The reversal of 1022551 is 1552201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022551 - 2⁵ = 1022519 is a prime.

It is a super-3 number, since 3×1022551³ = 3207570333179850453, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022501) 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 3 ways as a sum of consecutive naturals, for example, 156 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (256158).

2^1022551 is an apocalyptic number.

1022551 is a deficient number, since it is larger than the sum of its proper divisors (2081).

1022551 is an equidigital number, since it uses as much as digits as its factorization.

1022551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1022551 is about 1011.2126383704. The cubic root of 1022551 is about 100.7461192158.

Adding to 1022551 its reverse (1552201), we get a palindrome (2574752).

The spelling of 1022551 in words is "one million, twenty-two thousand, five hundred fifty-one".