1022261 has 4 divisors (see below), whose sum is σ = 1082412. Its totient is φ = 962112.

The previous prime is 1022251. The next prime is 1022291. The reversal of 1022261 is 1622201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 624100 + 398161 = 790^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022261 - 2¹⁸ = 760117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30050 + ... + 30083.

It is an arithmetic number, because the mean of its divisors is an integer number (270603).

2^1022261 is an apocalyptic number.

It is an amenable number.

1022261 is a deficient number, since it is larger than the sum of its proper divisors (60151).

1022261 is an equidigital number, since it uses as much as digits as its factorization.

1022261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60150.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1022261 is about 1011.0692360071. The cubic root of 1022261 is about 100.7365942999.

Adding to 1022261 its reverse (1622201), we get a palindrome (2644462).

The spelling of 1022261 in words is "one million, twenty-two thousand, two hundred sixty-one".