53690069 has 2 divisors, whose sum is σ = 53690070. Its totient is φ = 53690068.

The previous prime is 53690057. The next prime is 53690083. The reversal of 53690069 is 96009635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50951044 + 2739025 = 7138^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 53690069 - 2⁴ = 53690053 is a prime.

It is a super-3 number, since 3×53690069³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53690569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26845034 + 26845035.

It is an arithmetic number, because the mean of its divisors is an integer number (26845035).

Almost surely, 2^53690069 is an apocalyptic number.

It is an amenable number.

53690069 is a deficient number, since it is larger than the sum of its proper divisors (1).

53690069 is an equidigital number, since it uses as much as digits as its factorization.

53690069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 53690069 is about 7327.3507490770. The cubic root of 53690069 is about 377.2518000664.

The spelling of 53690069 in words is "fifty-three million, six hundred ninety thousand, sixty-nine".