53697769 has 2 divisors, whose sum is σ = 53697770. Its totient is φ = 53697768.

The previous prime is 53697757. The next prime is 53697773. The reversal of 53697769 is 96779635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51840000 + 1857769 = 7200^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 53697769 - 2²¹ = 51600617 is a prime.

It is a super-2 number, since 2×53697769² = 5766900791154722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53697739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26848884 + 26848885.

It is an arithmetic number, because the mean of its divisors is an integer number (26848885).

Almost surely, 2^53697769 is an apocalyptic number.

It is an amenable number.

53697769 is a deficient number, since it is larger than the sum of its proper divisors (1).

53697769 is an equidigital number, since it uses as much as digits as its factorization.

53697769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 52.

The square root of 53697769 is about 7327.8761588881. The cubic root of 53697769 is about 377.2698338174.

The spelling of 53697769 in words is "fifty-three million, six hundred ninety-seven thousand, seven hundred sixty-nine".