1058921 has 2 divisors, whose sum is σ = 1058922. Its totient is φ = 1058920.

The previous prime is 1058891. The next prime is 1058951. The reversal of 1058921 is 1298501.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1058891) and next prime (1058951).

It can be written as a sum of positive squares in only one way, i.e., 846400 + 212521 = 920^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1058921 - 2¹⁰ = 1057897 is a prime.

It is a super-2 number, since 2×1058921² = 2242627368482, which contains 22 as substring.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (1058951) 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 as a sum of consecutive naturals, namely, 529460 + 529461.

It is an arithmetic number, because the mean of its divisors is an integer number (529461).

2^1058921 is an apocalyptic number.

It is an amenable number.

1058921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1058921 is an equidigital number, since it uses as much as digits as its factorization.

1058921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1058921 is about 1029.0388719577. The cubic root of 1058921 is about 101.9266742001.

The spelling of 1058921 in words is "one million, fifty-eight thousand, nine hundred twenty-one".