1056660901 has 2 divisors, whose sum is σ = 1056660902. Its totient is φ = 1056660900.

The previous prime is 1056660893. The next prime is 1056660929. The reversal of 1056660901 is 1090666501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005524100 + 51136801 = 31710^2 + 7151^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056660901 - 2³ = 1056660893 is a prime.

It is a super-2 number, since 2×1056660901² = 2233064519404263602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056660961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528330450 + 528330451.

It is an arithmetic number, because the mean of its divisors is an integer number (528330451).

Almost surely, 2^1056660901 is an apocalyptic number.

It is an amenable number.

1056660901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056660901 is an equidigital number, since it uses as much as digits as its factorization.

1056660901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1056660901 is about 32506.3209391650. The cubic root of 1056660901 is about 1018.5410710547.

The spelling of 1056660901 in words is "one billion, fifty-six million, six hundred sixty thousand, nine hundred one".