53669387 has 2 divisors, whose sum is σ = 53669388. Its totient is φ = 53669386.

The previous prime is 53669359. The next prime is 53669393. The reversal of 53669387 is 78396635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53669387 - 2⁸ = 53669131 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53669687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26834693 + 26834694.

It is an arithmetic number, because the mean of its divisors is an integer number (26834694).

Almost surely, 2^53669387 is an apocalyptic number.

53669387 is a deficient number, since it is larger than the sum of its proper divisors (1).

53669387 is an equidigital number, since it uses as much as digits as its factorization.

53669387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 53669387 is about 7325.9393254381. The cubic root of 53669387 is about 377.2033533429.

The spelling of 53669387 in words is "fifty-three million, six hundred sixty-nine thousand, three hundred eighty-seven".