1056610321 has 4 divisors (see below), whose sum is σ = 1137888052. Its totient is φ = 975332592.

The previous prime is 1056610283. The next prime is 1056610327. The reversal of 1056610321 is 1230166501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52417600 + 1004192721 = 7240^2 + 31689^2 .

It is not a de Polignac number, because 1056610321 - 2⁷ = 1056610193 is a prime.

It is a super-2 number, since 2×1056610321² = 2232850740887446082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056610327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40638846 + ... + 40638871.

It is an arithmetic number, because the mean of its divisors is an integer number (284472013).

Almost surely, 2^1056610321 is an apocalyptic number.

It is an amenable number.

1056610321 is a deficient number, since it is larger than the sum of its proper divisors (81277731).

1056610321 is an equidigital number, since it uses as much as digits as its factorization.

1056610321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81277730.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1056610321 is about 32505.5429273224. The cubic root of 1056610321 is about 1018.5248190324.

Adding to 1056610321 its reverse (1230166501), we get a palindrome (2286776822).

The spelling of 1056610321 in words is "one billion, fifty-six million, six hundred ten thousand, three hundred twenty-one".