1054921 has 6 divisors (see below), whose sum is σ = 1227210. Its totient is φ = 904176.

The previous prime is 1054909. The next prime is 1054927. The reversal of 1054921 is 1294501.

It can be written as a sum of positive squares in only one way, i.e., 741321 + 313600 = 861^2 + 560^2 .

It is not a de Polignac number, because 1054921 - 2¹¹ = 1052873 is a prime.

It is a super-2 number, since 2×1054921² = 2225716632482, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1054892 and 1054901.

It is not an unprimeable number, because it can be changed into a prime (1054927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10716 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (204535).

2^1054921 is an apocalyptic number.

It is an amenable number.

1054921 is a deficient number, since it is larger than the sum of its proper divisors (172289).

1054921 is an equidigital number, since it uses as much as digits as its factorization.

1054921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21543 (or 21536 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1054921 is about 1027.0934718905. The cubic root of 1054921 is about 101.7981719674.

The spelling of 1054921 in words is "one million, fifty-four thousand, nine hundred twenty-one".