128156051 has 2 divisors, whose sum is σ = 128156052. Its totient is φ = 128156050.

The previous prime is 128156029. The next prime is 128156057. The reversal of 128156051 is 150651821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128156051 is a prime.

It is not a weakly prime, because it can be changed into another prime (128156057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64078025 + 64078026.

It is an arithmetic number, because the mean of its divisors is an integer number (64078026).

Almost surely, 2^128156051 is an apocalyptic number.

128156051 is a deficient number, since it is larger than the sum of its proper divisors (1).

128156051 is an equidigital number, since it uses as much as digits as its factorization.

128156051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 128156051 is about 11320.6029433065. The cubic root of 128156051 is about 504.1731408893.

The spelling of 128156051 in words is "one hundred twenty-eight million, one hundred fifty-six thousand, fifty-one".