657161051 has 2 divisors, whose sum is σ = 657161052. Its totient is φ = 657161050.

The previous prime is 657161017. The next prime is 657161059. The reversal of 657161051 is 150161756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 657161051 - 2¹⁴ = 657144667 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 657160999 and 657161017.

It is not a weakly prime, because it can be changed into another prime (657161059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328580525 + 328580526.

It is an arithmetic number, because the mean of its divisors is an integer number (328580526).

Almost surely, 2^657161051 is an apocalyptic number.

657161051 is a deficient number, since it is larger than the sum of its proper divisors (1).

657161051 is an equidigital number, since it uses as much as digits as its factorization.

657161051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 657161051 is about 25635.1526424166. The cubic root of 657161051 is about 869.4086133749.

The spelling of 657161051 in words is "six hundred fifty-seven million, one hundred sixty-one thousand, fifty-one".