1058055581 has 6 divisors (see below), whose sum is σ = 1162986846. Its totient is φ = 961868600.

The previous prime is 1058055569. The next prime is 1058055601. The reversal of 1058055581 is 1855508501.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 938503225 + 119552356 = 30635^2 + 10934^2 .

It is not a de Polignac number, because 1058055581 - 2¹⁴ = 1058039197 is a prime.

It is a super-2 number, since 2×1058055581² = 2238963224970495122, 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 (1058055511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4372010 + ... + 4372251.

It is an arithmetic number, because the mean of its divisors is an integer number (193831141).

Almost surely, 2^1058055581 is an apocalyptic number.

1058055581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1058055581 is a deficient number, since it is larger than the sum of its proper divisors (104931265).

1058055581 is an equidigital number, since it uses as much as digits as its factorization.

1058055581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8744283 (or 8744272 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 38.

The square root of 1058055581 is about 32527.7663081866. The cubic root of 1058055581 is about 1018.9889960010.

The spelling of 1058055581 in words is "one billion, fifty-eight million, fifty-five thousand, five hundred eighty-one".