1056661051 has 2 divisors, whose sum is σ = 1056661052. Its totient is φ = 1056661050.

The previous prime is 1056661049. The next prime is 1056661127. The reversal of 1056661051 is 1501666501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1056661051 - 2¹ = 1056661049 is a prime.

It is a super-2 number, since 2×1056661051² = 2233065153400849202, which contains 22 as substring.

Together with 1056661049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1056661751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528330525 + 528330526.

It is an arithmetic number, because the mean of its divisors is an integer number (528330526).

Almost surely, 2^1056661051 is an apocalyptic number.

1056661051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056661051 is an equidigital number, since it uses as much as digits as its factorization.

1056661051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1056661051 is about 32506.3232464085. The cubic root of 1056661051 is about 1018.5411192509.

It can be divided in two parts, 10566 and 61051, that added together give a palindrome (71617).

The spelling of 1056661051 in words is "one billion, fifty-six million, six hundred sixty-one thousand, fifty-one".