53945657 has 2 divisors, whose sum is σ = 53945658. Its totient is φ = 53945656.

The previous prime is 53945629. The next prime is 53945699. The reversal of 53945657 is 75654935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 524176 = 7309^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 53945657 - 2⁸ = 53945401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53935657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26972828 + 26972829.

It is an arithmetic number, because the mean of its divisors is an integer number (26972829).

Almost surely, 2^53945657 is an apocalyptic number.

It is an amenable number.

53945657 is a deficient number, since it is larger than the sum of its proper divisors (1).

53945657 is an equidigital number, since it uses as much as digits as its factorization.

53945657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 44.

The square root of 53945657 is about 7344.7707248082. The cubic root of 53945657 is about 377.8494800239.

The spelling of 53945657 in words is "fifty-three million, nine hundred forty-five thousand, six hundred fifty-seven".