52974540161 has 2 divisors, whose sum is σ = 52974540162. Its totient is φ = 52974540160.

The previous prime is 52974540139. The next prime is 52974540169. The reversal of 52974540161 is 16104547925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36802585600 + 16171954561 = 191840^2 + 127169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52974540161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52974540169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26487270080 + 26487270081.

It is an arithmetic number, because the mean of its divisors is an integer number (26487270081).

Almost surely, 2^52974540161 is an apocalyptic number.

It is an amenable number.

52974540161 is a deficient number, since it is larger than the sum of its proper divisors (1).

52974540161 is an equidigital number, since it uses as much as digits as its factorization.

52974540161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 52974540161 in words is "fifty-two billion, nine hundred seventy-four million, five hundred forty thousand, one hundred sixty-one".