1056422261 has 4 divisors (see below), whose sum is σ = 1084974252. Its totient is φ = 1027870272.

The previous prime is 1056422239. The next prime is 1056422267. The reversal of 1056422261 is 1622246501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1622246501 = 47 ⋅34515883.

It can be written as a sum of positive squares in 2 ways, for example, as 755920036 + 300502225 = 27494^2 + 17335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056422261 is a prime.

It is a super-2 number, since 2×1056422261² = 2232055987072704242, 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 (1056422267) 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, 14275940 + ... + 14276013.

It is an arithmetic number, because the mean of its divisors is an integer number (271243563).

Almost surely, 2^1056422261 is an apocalyptic number.

It is an amenable number.

1056422261 is a deficient number, since it is larger than the sum of its proper divisors (28551991).

1056422261 is an equidigital number, since it uses as much as digits as its factorization.

1056422261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28551990.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1056422261 is about 32502.6500611873. The cubic root of 1056422261 is about 1018.4643883203.

Adding to 1056422261 its reverse (1622246501), we get a palindrome (2678668762).

The spelling of 1056422261 in words is "one billion, fifty-six million, four hundred twenty-two thousand, two hundred sixty-one".