1021481 has 8 divisors (see below), whose sum is σ = 1069824. Its totient is φ = 974160.

The previous prime is 1021463. The next prime is 1021483. The reversal of 1021481 is 1841201.

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 1021481 - 2⁶ = 1021417 is a prime.

It is a super-2 number, since 2×1021481² = 2086846866722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021483) 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, 2375 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (133728).

2^1021481 is an apocalyptic number.

It is an amenable number.

1021481 is a deficient number, since it is larger than the sum of its proper divisors (48343).

1021481 is an equidigital number, since it uses as much as digits as its factorization.

1021481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1021481 is about 1010.6834321389. The cubic root of 1021481 is about 100.7109666188.

Adding to 1021481 its reverse (1841201), we get a palindrome (2862682).

The spelling of 1021481 in words is "one million, twenty-one thousand, four hundred eighty-one".