1011656551 has 2 divisors, whose sum is σ = 1011656552. Its totient is φ = 1011656550.

The previous prime is 1011656531. The next prime is 1011656563. The reversal of 1011656551 is 1556561101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011656551 - 2¹¹ = 1011654503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011656531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505828275 + 505828276.

It is an arithmetic number, because the mean of its divisors is an integer number (505828276).

Almost surely, 2^1011656551 is an apocalyptic number.

1011656551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011656551 is an equidigital number, since it uses as much as digits as its factorization.

1011656551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1011656551 is about 31806.5488696903. The cubic root of 1011656551 is about 1003.8705167720.

The spelling of 1011656551 in words is "one billion, eleven million, six hundred fifty-six thousand, five hundred fifty-one".