53690569 has 2 divisors, whose sum is σ = 53690570. Its totient is φ = 53690568.

The previous prime is 53690521. The next prime is 53690597. The reversal of 53690569 is 96509635.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45738169 + 7952400 = 6763^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 53690569 - 2⁹ = 53690057 is a prime.

It is a super-2 number, since 2×53690569² = 5765354399087522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53690519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26845284 + 26845285.

It is an arithmetic number, because the mean of its divisors is an integer number (26845285).

Almost surely, 2^53690569 is an apocalyptic number.

It is an amenable number.

53690569 is a deficient number, since it is larger than the sum of its proper divisors (1).

53690569 is an equidigital number, since it uses as much as digits as its factorization.

53690569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 43.

The square root of 53690569 is about 7327.3848677410. The cubic root of 53690569 is about 377.2529711416.

The spelling of 53690569 in words is "fifty-three million, six hundred ninety thousand, five hundred sixty-nine".