1022257 has 8 divisors (see below), whose sum is σ = 1085760. Its totient is φ = 959760.

The previous prime is 1022251. The next prime is 1022291. The reversal of 1022257 is 7522201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022257 - 2³ = 1022249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3132 + ... + 3442.

It is an arithmetic number, because the mean of its divisors is an integer number (135720).

2^1022257 is an apocalyptic number.

It is an amenable number.

1022257 is a deficient number, since it is larger than the sum of its proper divisors (63503).

1022257 is a wasteful number, since it uses less digits than its factorization.

1022257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1022257 is about 1011.0672579013. The cubic root of 1022257 is about 100.7364629091.

Adding to 1022257 its reverse (7522201), we get a palindrome (8544458).

The spelling of 1022257 in words is "one million, twenty-two thousand, two hundred fifty-seven".