53866403 has 2 divisors, whose sum is σ = 53866404. Its totient is φ = 53866402.

The previous prime is 53866367. The next prime is 53866411. The reversal of 53866403 is 30466835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53866403 - 2¹⁴ = 53850019 is a prime.

It is not a weakly prime, because it can be changed into another prime (53866453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26933201 + 26933202.

It is an arithmetic number, because the mean of its divisors is an integer number (26933202).

Almost surely, 2^53866403 is an apocalyptic number.

53866403 is a deficient number, since it is larger than the sum of its proper divisors (1).

53866403 is an equidigital number, since it uses as much as digits as its factorization.

53866403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 53866403 is about 7339.3734746230. The cubic root of 53866403 is about 377.6643507575.

The spelling of 53866403 in words is "fifty-three million, eight hundred sixty-six thousand, four hundred three".