2157176051 has 2 divisors, whose sum is σ = 2157176052. Its totient is φ = 2157176050.

The previous prime is 2157176033. The next prime is 2157176101. The reversal of 2157176051 is 1506717512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2157176051 - 2⁶ = 2157175987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2157176011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078588025 + 1078588026.

It is an arithmetic number, because the mean of its divisors is an integer number (1078588026).

Almost surely, 2^2157176051 is an apocalyptic number.

2157176051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157176051 is an equidigital number, since it uses as much as digits as its factorization.

2157176051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 35.

The square root of 2157176051 is about 46445.4093641126. The cubic root of 2157176051 is about 1292.0972337417.

The spelling of 2157176051 in words is "two billion, one hundred fifty-seven million, one hundred seventy-six thousand, fifty-one".