53999503 has 2 divisors, whose sum is σ = 53999504. Its totient is φ = 53999502.

The previous prime is 53999483. The next prime is 53999587. The reversal of 53999503 is 30599935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53999503 - 2⁵ = 53999471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53999503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53999203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26999751 + 26999752.

It is an arithmetic number, because the mean of its divisors is an integer number (26999752).

Almost surely, 2^53999503 is an apocalyptic number.

53999503 is a deficient number, since it is larger than the sum of its proper divisors (1).

53999503 is an equidigital number, since it uses as much as digits as its factorization.

53999503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164025, while the sum is 43.

The square root of 53999503 is about 7348.4354117050. The cubic root of 53999503 is about 377.9751553709.

The spelling of 53999503 in words is "fifty-three million, nine hundred ninety-nine thousand, five hundred three".