1022501 has 2 divisors, whose sum is σ = 1022502. Its totient is φ = 1022500.

The previous prime is 1022491. The next prime is 1022503. The reversal of 1022501 is 1052201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 2401 = 1010^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022501 is a prime.

Together with 1022503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022503) 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 as a sum of consecutive naturals, namely, 511250 + 511251.

It is an arithmetic number, because the mean of its divisors is an integer number (511251).

2^1022501 is an apocalyptic number.

It is an amenable number.

1022501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022501 is an equidigital number, since it uses as much as digits as its factorization.

1022501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1022501 is about 1011.1879152759. The cubic root of 1022501 is about 100.7444771174.

Adding to 1022501 its reverse (1052201), we get a palindrome (2074702).

The spelling of 1022501 in words is "one million, twenty-two thousand, five hundred one".