1021522 has 16 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 478192.

The previous prime is 1021487. The next prime is 1021541. The reversal of 1021522 is 2251201.

It is a nialpdrome in base 16.

It is an unprimeable number.

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, 2229 + ... + 2647.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2^1021522 is an apocalyptic number.

1021522 is a deficient number, since it is larger than the sum of its proper divisors (611438).

1021522 is a wasteful number, since it uses less digits than its factorization.

1021522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1021522 is about 1010.7037152400. The cubic root of 1021522 is about 100.7123140397.

Adding to 1021522 its reverse (2251201), we get a palindrome (3272723).

It can be divided in two parts, 102152 and 2, that multiplied together give a square (204304 = 452²).

The spelling of 1021522 in words is "one million, twenty-one thousand, five hundred twenty-two".